2239 lines
135 KiB
JavaScript
2239 lines
135 KiB
JavaScript
/******
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* name: ghacks user.js
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* date: 17 January 2019
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* version 65-alpha: Dancing with My Pants
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* "If I had the chance, I'd ask the world to dance, and I'll be dancing with my pants"
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* authors: v52+ github | v51- www.ghacks.net
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* url: https://github.com/ghacksuserjs/ghacks-user.js
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* license: MIT: https://github.com/ghacksuserjs/ghacks-user.js/blob/master/LICENSE.txt
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* releases: These are end-of-stable-life-cycle legacy archives.
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*Always* use the master branch user.js for a current up-to-date version.
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url: https://github.com/ghacksuserjs/ghacks-user.js/releases
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* README:
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0. Consider using Tor Browser if it meets your needs or fits your threat model better
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* https://www.torproject.org/about/torusers.html.en
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1. READ the full README
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* https://github.com/ghacksuserjs/ghacks-user.js/blob/master/README.md
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2. READ this
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* https://github.com/ghacksuserjs/ghacks-user.js/wiki/1.3-Implementation
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3. If you skipped steps 1 and 2 above (shame on you), then here is the absolute minimum
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* Auto-installing updates for Firefox and extensions are disabled (section 0302's)
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* Some user data is erased on close (section 2800). Change this to suit your needs
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* EACH RELEASE check:
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- 4600s: reset prefs made redundant due to privacy.resistFingerprinting (RPF)
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or enable them as an alternative to RFP or for ESR users
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- 9999s: reset deprecated prefs in about:config or enable relevant section(s) for ESR
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* Site breakage WILL happen
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- There are often trade-offs and conflicts between Security vs Privacy vs Anti-Fingerprinting
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and these need to be balanced against Functionality & Convenience & Breakage
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* You will need to make changes, and to troubleshoot at times (choose wisely, there is always a trade-off).
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While not 100% definitive, search for "[SETUP". If required, add each pref to your overrides section at
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default values (or comment them out and reset them in about:config). Here are the main ones:
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[SETUP-WEB] can cause some websites to break
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[SETUP-CHROME] changes how Firefox itself behaves (i.e. NOT directly website related)
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[SETUP-PERF] may impact performance
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* [WARNING] tags are extra special and used sparingly, so heed them
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4. BACKUP your profile folder before implementing (and/or test in a new/cloned profile)
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5. KEEP UP TO DATE: https://github.com/ghacksuserjs/ghacks-user.js/wiki#small_orange_diamond-maintenance
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* INDEX:
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0100: STARTUP
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0200: GEOLOCATION
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0300: QUIET FOX
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0400: BLOCKLISTS / SAFE BROWSING / TRACKING PROTECTION
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0500: SYSTEM ADD-ONS / EXPERIMENTS
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0600: BLOCK IMPLICIT OUTBOUND
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0700: HTTP* / TCP/IP / DNS / PROXY / SOCKS etc
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0800: LOCATION BAR / SEARCH BAR / SUGGESTIONS / HISTORY / FORMS
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0900: PASSWORDS
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1000: CACHE / SESSION (RE)STORE / FAVICONS
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1200: HTTPS (SSL/TLS / OCSP / CERTS / HPKP / CIPHERS)
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1400: FONTS
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1600: HEADERS / REFERERS
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1700: CONTAINERS
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1800: PLUGINS
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2000: MEDIA / CAMERA / MIC
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2200: WINDOW MEDDLING & LEAKS / POPUPS
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2300: WEB WORKERS
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2400: DOM (DOCUMENT OBJECT MODEL) & JAVASCRIPT
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2500: HARDWARE FINGERPRINTING
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2600: MISCELLANEOUS
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2700: PERSISTENT STORAGE
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2800: SHUTDOWN
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4000: FPI (FIRST PARTY ISOLATION)
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4500: RFP (RESIST FINGERPRINTING)
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4600: RFP ALTERNATIVES
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4700: RFP ALTERNATIVES (NAVIGATOR / USER AGENT (UA) SPOOFING)
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5000: PERSONAL
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9999: DEPRECATED / REMOVED / LEGACY / RENAMED
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******/
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/* START: internal custom pref to test for syntax errors
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* [NOTE] In FF60+, not all syntax errors cause parsing to abort i.e. reaching the last debug
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* pref no longer necessarily means that all prefs have been applied. Check the console right
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* after startup for any warnings/error messages related to non-applied prefs
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* [1] https://blog.mozilla.org/nnethercote/2018/03/09/a-new-preferences-parser-for-firefox/ ***/
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user_pref("_user.js.parrot", "START: Oh yes, the Norwegian Blue... what's wrong with it?");
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/*** [SECTION 0100]: STARTUP ***/
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user_pref("_user.js.parrot", "0100 syntax error: the parrot's dead!");
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/* 0101: disable default browser check
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* [SETTING] General>Startup>Always check if Firefox is your default browser ***/
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user_pref("browser.shell.checkDefaultBrowser", false);
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/* 0102: set START page (0=blank, 1=home, 2=last visited page, 3=resume previous session)
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* [NOTE] Session Restore is not used in PB mode (0110) and is cleared with history (2803, 2804)
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* [SETTING] General>Startup>Restore previous session ***/
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user_pref("browser.startup.page", 0);
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/* 0103: set HOME+NEWWINDOW page
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* about:home=Activity Stream (default, see 0105), custom URL, about:blank
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* [SETTING] Home>New Windows and Tabs>Homepage and new windows ***/
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user_pref("browser.startup.homepage", "about:blank");
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/* 0104: set NEWTAB page
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* true=Activity Stream (default, see 0105), false=blank page
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* [SETTING] Home>New Windows and Tabs>New tabs ***/
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user_pref("browser.newtabpage.enabled", false);
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user_pref("browser.newtab.preload", false);
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/* 0105: disable Activity Stream stuff (AS)
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* AS is the default homepage/newtab in FF57+, based on metadata and browsing behavior.
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* **NOT LISTING ALL OF THESE: USE THE PREFERENCES UI**
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* [SETTING] Home>Firefox Home Content>... to show/hide what you want ***/
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/* 0105a: disable Activity Stream telemetry ***/
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user_pref("browser.newtabpage.activity-stream.feeds.telemetry", false);
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user_pref("browser.newtabpage.activity-stream.telemetry", false);
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user_pref("browser.newtabpage.activity-stream.telemetry.ping.endpoint", "");
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/* 0105b: disable Activity Stream Snippets
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* Runs code received from a server (aka Remote Code Execution) and sends information back to a metrics server
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* [1] https://abouthome-snippets-service.readthedocs.io/ ***/
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user_pref("browser.aboutHomeSnippets.updateUrl", "");
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user_pref("browser.newtabpage.activity-stream.asrouter.providers.snippets", "");
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user_pref("browser.newtabpage.activity-stream.disableSnippets", true);
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user_pref("browser.newtabpage.activity-stream.feeds.snippets", false);
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/* 0105c: disable Activity Stream Top Stories, Pocket-based and/or sponsored content ***/
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user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false);
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user_pref("browser.newtabpage.activity-stream.section.highlights.includePocket", false);
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user_pref("browser.newtabpage.activity-stream.showSponsored", false);
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/* 0105d: disable Activity Stream recent Highlights in the Library [FF57+] ***/
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// user_pref("browser.library.activity-stream.enabled", false);
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/* 0110: start Firefox in PB (Private Browsing) mode
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* [NOTE] In this mode *all* windows are "private windows" and the PB mode icon is not displayed
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* [WARNING] The P in PB mode is misleading: it means no "persistent" local storage of history,
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* caches, searches or cookies (which you can achieve in normal mode). In fact, it limits or
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* removes the ability to control these, and you need to quit Firefox to clear them. PB is best
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* used as a one off window (File>New Private Window) to provide a temporary self-contained
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* new instance. Closing all Private Windows clears all traces. Repeat as required. PB also does
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* not allow indexedDB which breaks many Extensions that use it including uBlock Origin and uMatrix
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* [SETTING] Privacy & Security>History>Custom Settings>Always use private browsing mode
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* [1] https://wiki.mozilla.org/Private_Browsing
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* [2] https://spreadprivacy.com/is-private-browsing-really-private/ ***/
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// user_pref("browser.privatebrowsing.autostart", true);
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/*** [SECTION 0200]: GEOLOCATION ***/
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user_pref("_user.js.parrot", "0200 syntax error: the parrot's definitely deceased!");
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/* 0201: disable Location-Aware Browsing
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* [1] https://www.mozilla.org/firefox/geolocation/ ***/
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// user_pref("geo.enabled", false);
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/* 0201b: set a default permission for Location [FF58+]
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* 0=always ask (default), 1=allow, 2=block
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* [NOTE] best left at default "always ask", fingerprintable via Permissions API
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* [SETTING] to add site exceptions: Page Info>Permissions>Access Your Location
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* [SETTING] to manage site exceptions: Options>Privacy & Security>Permissions>Location>Settings ***/
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// user_pref("permissions.default.geo", 2);
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/* 0202: disable GeoIP-based search results
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* [NOTE] May not be hidden if Firefox has changed your settings due to your locale
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* [1] https://trac.torproject.org/projects/tor/ticket/16254
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* [2] https://support.mozilla.org/en-US/kb/how-stop-firefox-making-automatic-connections#w_geolocation-for-default-search-engine ***/
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user_pref("browser.search.region", "US"); // [HIDDEN PREF]
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user_pref("browser.search.geoip.url", "");
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/* 0205: set OS & APP locale [FF59+]
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* If set to empty, the OS locales are used. If not set at all, default locale is used ***/
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user_pref("intl.locale.requested", "en-US"); // [HIDDEN PREF]
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/* 0206: disable geographically specific results/search engines e.g. "browser.search.*.US"
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* i.e. ignore all of Mozilla's various search engines in multiple locales ***/
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user_pref("browser.search.geoSpecificDefaults", false);
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user_pref("browser.search.geoSpecificDefaults.url", "");
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/* 0207: set language to match ***/
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user_pref("intl.accept_languages", "en-US, en");
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/* 0208: enforce US English locale regardless of the system locale
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* [1] https://bugzilla.mozilla.org/867501 ***/
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user_pref("javascript.use_us_english_locale", true); // [HIDDEN PREF]
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/* 0209: use APP locale over OS locale in regional preferences [FF56+]
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* [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1379420,1364789 ***/
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user_pref("intl.regional_prefs.use_os_locales", false);
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/* 0210: use Mozilla geolocation service instead of Google when geolocation is enabled
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* Optionally enable logging to the console (defaults to false) ***/
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user_pref("geo.wifi.uri", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");
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// user_pref("geo.wifi.logging.enabled", true); // [HIDDEN PREF]
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/*** [SECTION 0300]: QUIET FOX
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We choose to not disable auto-CHECKs (0301's) but to disable auto-INSTALLs (0302's).
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There are many legitimate reasons to turn off auto-INSTALLS, including hijacked or
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monetized extensions, time constraints, legacy issues, and fear of breakage/bugs.
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It is still important to do updates for security reasons, please do so manually. ***/
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user_pref("_user.js.parrot", "0300 syntax error: the parrot's not pinin' for the fjords!");
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/* 0301b: disable auto-update checks for extensions
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* [SETTING] about:addons>Extensions>[cog-wheel-icon]>Update Add-ons Automatically (toggle) ***/
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// user_pref("extensions.update.enabled", false);
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/* 0302a: disable auto update installing for Firefox
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* [SETTING] General>Firefox Updates>Check for updates but let you choose... ***/
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user_pref("app.update.auto", false);
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/* 0302b: disable auto update installing for extensions (after the check in 0301b)
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* [SETTING] about:addons>Extensions>[cog-wheel-icon]>Update Add-ons Automatically (toggle) ***/
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user_pref("extensions.update.autoUpdateDefault", false);
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/* 0303: disable background update service [WINDOWS]
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* [SETTING] General>Firefox Updates>Use a background service to install updates ***/
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user_pref("app.update.service.enabled", false);
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/* 0304: disable background update staging ***/
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user_pref("app.update.staging.enabled", false);
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/* 0305: enforce update information is displayed
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* This is the update available, downloaded, error and success information ***/
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user_pref("app.update.silent", false);
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/* 0306: disable extension metadata updating
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* sends daily pings to Mozilla about extensions and recent startups
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* [NOTE] blocks any expanded text description, if it exists, when you "show more details about an addon" ***/
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user_pref("extensions.getAddons.cache.enabled", false);
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/* 0307: disable auto updating of personas (themes) ***/
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user_pref("lightweightThemes.update.enabled", false);
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/* 0308: disable search update
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* [SETTING] General>Firefox Updates>Automatically update search engines ***/
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user_pref("browser.search.update", false);
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/* 0309: disable sending Flash crash reports ***/
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user_pref("dom.ipc.plugins.flash.subprocess.crashreporter.enabled", false);
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/* 0310: disable sending the URL of the website where a plugin crashed ***/
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user_pref("dom.ipc.plugins.reportCrashURL", false);
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/* 0320: disable about:addons' Get Add-ons panel (uses Google Analytics) ***/
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user_pref("extensions.getAddons.showPane", false); // [HIDDEN PREF]
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user_pref("extensions.webservice.discoverURL", "");
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/* 0330: disable telemetry
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* the pref (.unified) affects the behaviour of the pref (.enabled)
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* IF unified=false then .enabled controls the telemetry module
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* IF unified=true then .enabled ONLY controls whether to record extended data
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* so make sure to have both set as false
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* [NOTE] FF58+ `toolkit.telemetry.enabled` is now LOCKED to reflect prerelease
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* or release builds (true and false respectively), see [2]
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* [1] https://firefox-source-docs.mozilla.org/toolkit/components/telemetry/telemetry/internals/preferences.html
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* [2] https://medium.com/georg-fritzsche/data-preference-changes-in-firefox-58-2d5df9c428b5 ***/
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user_pref("toolkit.telemetry.unified", false);
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user_pref("toolkit.telemetry.enabled", false); // see [NOTE] above FF58+
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user_pref("toolkit.telemetry.server", "data:,");
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user_pref("toolkit.telemetry.archive.enabled", false);
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user_pref("toolkit.telemetry.cachedClientID", "");
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user_pref("toolkit.telemetry.newProfilePing.enabled", false); // [FF55+]
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user_pref("toolkit.telemetry.shutdownPingSender.enabled", false); // [FF55+]
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user_pref("toolkit.telemetry.updatePing.enabled", false); // [FF56+]
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user_pref("toolkit.telemetry.bhrPing.enabled", false); // [FF57+] Background Hang Reporter
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user_pref("toolkit.telemetry.firstShutdownPing.enabled", false); // [FF57+]
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user_pref("toolkit.telemetry.hybridContent.enabled", false); // [FF59+]
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/* 0333: disable health report
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* [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to send technical... data ***/
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user_pref("datareporting.healthreport.uploadEnabled", false);
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/* 0334: disable new data submission, master kill switch [FF41+]
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* If disabled, no policy is shown or upload takes place, ever
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* [1] https://bugzilla.mozilla.org/1195552 ***/
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user_pref("datareporting.policy.dataSubmissionEnabled", false);
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/* 0335: disable Telemetry Coverage
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* [1] https://blog.mozilla.org/data/2018/08/20/effectively-measuring-search-in-firefox/ ***/
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user_pref("toolkit.telemetry.coverage.opt-out", true); // [HIDDEN PREF]
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user_pref("toolkit.coverage.opt-out", true); // [FF64+] [HIDDEN PREF]
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user_pref("toolkit.coverage.endpoint.base", "");
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/* 0350: disable crash reports ***/
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user_pref("breakpad.reportURL", "");
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/* 0351: disable sending of crash reports ***/
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user_pref("browser.tabs.crashReporting.sendReport", false); // [FF44+]
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user_pref("browser.crashReports.unsubmittedCheck.enabled", false); // [FF51+]
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user_pref("browser.crashReports.unsubmittedCheck.autoSubmit2", false); // [FF58+]
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/* 0370: disable Pocket [FF46+]
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* Pocket is a third party (now owned by Mozilla) "save for later" cloud service
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* [1] https://en.wikipedia.org/wiki/Pocket_(application)
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* [2] https://www.gnu.gl/blog/Posts/multiple-vulnerabilities-in-pocket/ ***/
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user_pref("extensions.pocket.enabled", false);
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/* 0380: disable Browser Error Reporter [FF60+]
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* [1] https://support.mozilla.org/en-US/kb/firefox-nightly-error-collection
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* [2] https://firefox-source-docs.mozilla.org/browser/browser/BrowserErrorReporter.html ***/
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user_pref("browser.chrome.errorReporter.enabled", false);
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user_pref("browser.chrome.errorReporter.submitUrl", "");
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/*** [SECTION 0400]: BLOCKLISTS / SAFE BROWSING / TRACKING PROTECTION
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This section has security & tracking protection implications vs privacy concerns vs effectiveness
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vs 3rd party 'censorship'. We DO NOT advocate no protection. If you disable Tracking Protection (TP)
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and/or Safe Browsing (SB), then SECTION 0400 REQUIRES YOU HAVE uBLOCK ORIGIN INSTALLED.
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Safe Browsing is designed to protect users from malicious sites. Tracking Protection is designed
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to lessen the impact of third parties on websites to reduce tracking and to speed up your browsing.
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These do rely on 3rd parties (Google for SB and Disconnect for TP), but many steps, which are
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continually being improved, have been taken to preserve privacy. Disable at your own risk.
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***/
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user_pref("_user.js.parrot", "0400 syntax error: the parrot's passed on!");
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/** BLOCKLISTS ***/
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/* 0401: enable Firefox blocklist, but sanitize blocklist url
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* [NOTE] It includes updates for "revoked certificates"
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* [1] https://blog.mozilla.org/security/2015/03/03/revoking-intermediate-certificates-introducing-onecrl/
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* [2] https://trac.torproject.org/projects/tor/ticket/16931 ***/
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user_pref("extensions.blocklist.enabled", true); // [DEFAULT: true]
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user_pref("extensions.blocklist.url", "https://blocklists.settings.services.mozilla.com/v1/blocklist/3/%APP_ID%/%APP_VERSION%/");
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/* 0403: disable individual unwanted/unneeded parts of the Kinto blocklists
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* What is Kinto?: https://wiki.mozilla.org/Firefox/Kinto#Specifications
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* As Firefox transitions to Kinto, the blocklists have been broken down into entries for certs to be
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* revoked, extensions and plugins to be disabled, and gfx environments that cause problems or crashes ***/
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// user_pref("services.blocklist.onecrl.collection", ""); // revoked certificates
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// user_pref("services.blocklist.addons.collection", "");
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// user_pref("services.blocklist.plugins.collection", "");
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// user_pref("services.blocklist.gfx.collection", "");
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/** SAFE BROWSING (SB)
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This sub-section has been redesigned to differentiate between "real-time"/"user initiated" data
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being sent to Google from all other settings such as using local blocklists/whitelists and updating
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those lists. There are NO privacy issues here. *IF* required, a full url is never sent to Google,
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only a PART-hash of the prefix, and this is hidden with noise of other real PART-hashes. Google also
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swear it is anonymized and only used to flag malicious sites/activity. Firefox also takes measures
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such as striping out identifying parameters and storing safe browsing cookies in a separate jar.
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SB v4 (FF57+) doesn't even use cookies. (#Turn on browser.safebrowsing.debug to monitor this activity)
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#Required reading [#] https://feeding.cloud.geek.nz/posts/how-safe-browsing-works-in-firefox/
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[1] https://wiki.mozilla.org/Security/Safe_Browsing ***/
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/* 0410: disable "Block dangerous and deceptive content"
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* This covers deceptive sites such as phishing and social engineering
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* [SETTING] Privacy & Security>Security>Deceptive Content and Software Protection ***/
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// user_pref("browser.safebrowsing.malware.enabled", false);
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// user_pref("browser.safebrowsing.phishing.enabled", false); // [FF50+]
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/* 0411: disable "Block dangerous downloads"
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* This covers malware and PUPs (potentially unwanted programs)
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* [SETTING] Privacy & Security>Security>Deceptive Content and Software Protection ***/
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// user_pref("browser.safebrowsing.downloads.enabled", false);
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/* 0412: disable "Warn me about unwanted and uncommon software"
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* [SETTING] Privacy & Security>Security>Deceptive Content and Software Protection ***/
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// user_pref("browser.safebrowsing.downloads.remote.block_potentially_unwanted", false); // [FF48+]
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// user_pref("browser.safebrowsing.downloads.remote.block_uncommon", false); // [FF48+]
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// user_pref("browser.safebrowsing.downloads.remote.block_dangerous", false); // [FF49+]
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// user_pref("browser.safebrowsing.downloads.remote.block_dangerous_host", false); // [FF49+]
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/* 0413: disable Google safebrowsing updates ***/
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// user_pref("browser.safebrowsing.provider.google.updateURL", "");
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// user_pref("browser.safebrowsing.provider.google.gethashURL", "");
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// user_pref("browser.safebrowsing.provider.google4.updateURL", ""); // [FF50+]
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// user_pref("browser.safebrowsing.provider.google4.gethashURL", ""); // [FF50+]
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/* 0414: disable binaries NOT in local lists being checked by Google (real-time checking) ***/
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user_pref("browser.safebrowsing.downloads.remote.enabled", false);
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user_pref("browser.safebrowsing.downloads.remote.url", "");
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/* 0415: disable reporting URLs ***/
|
|
user_pref("browser.safebrowsing.provider.google.reportURL", "");
|
|
user_pref("browser.safebrowsing.reportPhishURL", "");
|
|
user_pref("browser.safebrowsing.provider.google4.reportURL", ""); // [FF50+]
|
|
user_pref("browser.safebrowsing.provider.google.reportMalwareMistakeURL", ""); // [FF54+]
|
|
user_pref("browser.safebrowsing.provider.google.reportPhishMistakeURL", ""); // [FF54+]
|
|
user_pref("browser.safebrowsing.provider.google4.reportMalwareMistakeURL", ""); // [FF54+]
|
|
user_pref("browser.safebrowsing.provider.google4.reportPhishMistakeURL", ""); // [FF54+]
|
|
/* 0416: disable 'ignore this warning' on Safe Browsing warnings
|
|
* If clicked, it bypasses the block for that session. This is a means for admins to enforce SB
|
|
* [TEST] see github wiki APPENDIX A: Test Sites: Section 5
|
|
* [1] https://bugzilla.mozilla.org/1226490 ***/
|
|
// user_pref("browser.safebrowsing.allowOverride", false);
|
|
/* 0417: disable data sharing [FF58+] ***/
|
|
user_pref("browser.safebrowsing.provider.google4.dataSharing.enabled", false);
|
|
user_pref("browser.safebrowsing.provider.google4.dataSharingURL", "");
|
|
|
|
/** TRACKING PROTECTION (TP)
|
|
There are NO privacy concerns here, but we strongly recommend to use uBlock Origin as well,
|
|
as it offers more comprehensive and specialized lists. It also allows per domain control. ***/
|
|
/* 0420: enable Tracking Protection in all windows
|
|
* [NOTE] TP sends DNT headers regardless of the DNT pref (see 1610)
|
|
* [1] https://wiki.mozilla.org/Security/Tracking_protection
|
|
* [2] https://support.mozilla.org/kb/tracking-protection-firefox ***/
|
|
// user_pref("privacy.trackingprotection.pbmode.enabled", true); // [DEFAULT: true]
|
|
// user_pref("privacy.trackingprotection.enabled", true);
|
|
/* 0422: set which Tracking Protection block list to use
|
|
* [WARNING] We don't recommend enforcing this from here, as available block lists can change
|
|
* [SETTING] Privacy & Security>Content Blocking>All Detected Trackers>Change block list ***/
|
|
// user_pref("urlclassifier.trackingTable", "test-track-simple,base-track-digest256"); // basic
|
|
/* 0423: disable Mozilla's blocklist for known Flash tracking/fingerprinting [FF48+]
|
|
* [1] https://www.ghacks.net/2016/07/18/firefox-48-blocklist-against-plugin-fingerprinting/
|
|
* [2] https://bugzilla.mozilla.org/1237198 ***/
|
|
// user_pref("browser.safebrowsing.blockedURIs.enabled", false);
|
|
/* 0424: disable Mozilla's tracking protection and Flash blocklist updates ***/
|
|
// user_pref("browser.safebrowsing.provider.mozilla.gethashURL", "");
|
|
// user_pref("browser.safebrowsing.provider.mozilla.updateURL", "");
|
|
/* 0425: disable passive Tracking Protection [FF53+]
|
|
* Passive TP annotates channels to lower the priority of network loads for resources on the tracking protection list
|
|
* [NOTE] It has no effect if TP is enabled, but keep in mind that by default TP is only enabled in Private Windows
|
|
* This is included for people who want to completely disable Tracking Protection.
|
|
* [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1170190,1141814 ***/
|
|
// user_pref("privacy.trackingprotection.annotate_channels", false);
|
|
// user_pref("privacy.trackingprotection.lower_network_priority", false);
|
|
/* 0426: enforce Content Blocking (required to block cookies) [FF63+] ***/
|
|
user_pref("browser.contentblocking.enabled", true); // [DEFAULT: true]
|
|
|
|
/*** [SECTION 0500]: SYSTEM ADD-ONS / EXPERIMENTS
|
|
System Add-ons are a method for shipping extensions, considered to be
|
|
built-in features to Firefox, that are hidden from the about:addons UI.
|
|
To view your System Add-ons go to about:support, they are listed under "Firefox Features"
|
|
|
|
Some System Add-ons have no on-off prefs. Instead you can manually remove them. Note that app
|
|
updates will restore them. They may also be updated and possibly restored automatically (see 0505)
|
|
* Portable: "...\App\Firefox64\browser\features\" (or "App\Firefox\etc" for 32bit)
|
|
* Windows: "...\Program Files\Mozilla\browser\features" (or "Program Files (X86)\etc" for 32bit)
|
|
* Mac: "...\Applications\Firefox\Contents\Resources\browser\features\"
|
|
[NOTE] On Mac you can right-click on the application and select "Show Package Contents"
|
|
* Linux: "/usr/lib/firefox/browser/features" (or similar)
|
|
|
|
[1] https://firefox-source-docs.mozilla.org/toolkit/mozapps/extensions/addon-manager/SystemAddons.html
|
|
[2] https://dxr.mozilla.org/mozilla-central/source/browser/extensions
|
|
***/
|
|
user_pref("_user.js.parrot", "0500 syntax error: the parrot's cashed in 'is chips!");
|
|
/* 0502: disable Mozilla permission to silently opt you into tests ***/
|
|
user_pref("network.allow-experiments", false);
|
|
/* 0503: disable Normandy/Shield [FF60+]
|
|
* Shield is an telemetry system (including Heartbeat) that can also push and test "recipes"
|
|
* [1] https://wiki.mozilla.org/Firefox/Shield
|
|
* [2] https://github.com/mozilla/normandy ***/
|
|
user_pref("app.normandy.enabled", false);
|
|
user_pref("app.normandy.api_url", "");
|
|
user_pref("app.shield.optoutstudies.enabled", false);
|
|
/* 0505: disable System Add-on updates ***/
|
|
user_pref("extensions.systemAddon.update.enabled", false); // [FF62+]
|
|
user_pref("extensions.systemAddon.update.url", ""); // [FF44+]
|
|
/* 0506: disable PingCentre telemetry (used in several System Add-ons) [FF57+]
|
|
* Currently blocked by 'datareporting.healthreport.uploadEnabled' (see 0333) ***/
|
|
user_pref("browser.ping-centre.telemetry", false);
|
|
/* 0515: disable Screenshots
|
|
* alternatively in FF60+, disable uploading to the Screenshots server
|
|
* [1] https://github.com/mozilla-services/screenshots
|
|
* [2] https://www.ghacks.net/2017/05/28/firefox-screenshots-integrated-in-firefox-nightly/ ***/
|
|
// user_pref("extensions.screenshots.disabled", true); // [FF55+]
|
|
// user_pref("extensions.screenshots.upload-disabled", true); // [FF60+]
|
|
/* 0517: disable Form Autofill
|
|
* [NOTE] Stored data is NOT secure (uses a JSON file)
|
|
* [NOTE] Heuristics controls Form Autofill on forms without @autocomplete attributes
|
|
* [SETTING] Privacy & Security>Forms & Passwords>Autofill addresses
|
|
* [1] https://wiki.mozilla.org/Firefox/Features/Form_Autofill
|
|
* [2] https://www.ghacks.net/2017/05/24/firefoxs-new-form-autofill-is-awesome/ ***/
|
|
user_pref("extensions.formautofill.addresses.enabled", false); // [FF55+]
|
|
user_pref("extensions.formautofill.available", "off"); // [FF56+]
|
|
user_pref("extensions.formautofill.creditCards.enabled", false); // [FF56+]
|
|
user_pref("extensions.formautofill.heuristics.enabled", false); // [FF55+]
|
|
/* 0518: disable Web Compatibility Reporter [FF56+]
|
|
* Web Compatibility Reporter adds a "Report Site Issue" button to send data to Mozilla ***/
|
|
user_pref("extensions.webcompat-reporter.enabled", false);
|
|
|
|
/*** [SECTION 0600]: BLOCK IMPLICIT OUTBOUND [not explicitly asked for - e.g. clicked on] ***/
|
|
user_pref("_user.js.parrot", "0600 syntax error: the parrot's no more!");
|
|
/* 0601: disable link prefetching
|
|
* [1] https://developer.mozilla.org/docs/Web/HTTP/Link_prefetching_FAQ ***/
|
|
user_pref("network.prefetch-next", false);
|
|
/* 0602: disable DNS prefetching
|
|
* [1] https://www.ghacks.net/2013/04/27/firefox-prefetching-what-you-need-to-know/
|
|
* [2] https://developer.mozilla.org/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control ***/
|
|
user_pref("network.dns.disablePrefetch", true);
|
|
user_pref("network.dns.disablePrefetchFromHTTPS", true); // [HIDDEN PREF]
|
|
/* 0603a: disable Seer/Necko
|
|
* [1] https://developer.mozilla.org/docs/Mozilla/Projects/Necko ***/
|
|
user_pref("network.predictor.enabled", false);
|
|
/* 0603b: disable more Necko/Captive Portal
|
|
* [1] https://en.wikipedia.org/wiki/Captive_portal
|
|
* [2] https://wiki.mozilla.org/Necko/CaptivePortal
|
|
* [3] https://trac.torproject.org/projects/tor/ticket/21790 ***/
|
|
user_pref("captivedetect.canonicalURL", "");
|
|
user_pref("network.captive-portal-service.enabled", false); // [FF52+]
|
|
/* 0605: disable link-mouseover opening connection to linked server
|
|
* [1] https://news.slashdot.org/story/15/08/14/2321202/how-to-quash-firefoxs-silent-requests
|
|
* [2] https://www.ghacks.net/2015/08/16/block-firefox-from-connecting-to-sites-when-you-hover-over-links/ ***/
|
|
user_pref("network.http.speculative-parallel-limit", 0);
|
|
/* 0606: disable pings (but enforce same host in case)
|
|
* [1] http://kb.mozillazine.org/Browser.send_pings
|
|
* [2] http://kb.mozillazine.org/Browser.send_pings.require_same_host ***/
|
|
user_pref("browser.send_pings", false);
|
|
user_pref("browser.send_pings.require_same_host", true);
|
|
/* 0607: disable links launching Windows Store on Windows 8/8.1/10 [WINDOWS]
|
|
* [1] https://www.ghacks.net/2016/03/25/block-firefox-chrome-windows-store/ ***/
|
|
user_pref("network.protocol-handler.external.ms-windows-store", false);
|
|
/* 0608: disable predictor / prefetching [FF48+] ***/
|
|
user_pref("network.predictor.enable-prefetch", false);
|
|
|
|
/*** [SECTION 0700]: HTTP* / TCP/IP / DNS / PROXY / SOCKS etc ***/
|
|
user_pref("_user.js.parrot", "0700 syntax error: the parrot's given up the ghost!");
|
|
/* 0701: disable IPv6
|
|
* IPv6 can be abused, especially regarding MAC addresses. They also do not play nice
|
|
* with VPNs. That's even assuming your ISP and/or router and/or website can handle it
|
|
* [NOTE] This is just an application level fallback. Disabling IPv6 is best done
|
|
* at an OS/network level, and/or configured properly in VPN setups
|
|
* [TEST] http://ipv6leak.com/
|
|
* [1] https://github.com/ghacksuserjs/ghacks-user.js/issues/437#issuecomment-403740626
|
|
* [2] https://www.internetsociety.org/tag/ipv6-security/ (see Myths 2,4,5,6) ***/
|
|
user_pref("network.dns.disableIPv6", true);
|
|
/* 0702: disable HTTP2 (which was based on SPDY which is now deprecated)
|
|
* HTTP2 raises concerns with "multiplexing" and "server push", does nothing to enhance
|
|
* privacy, and in fact opens up a number of server-side fingerprinting opportunities
|
|
* [SETUP-PERF] Relax this if you have FPI enabled (see 4000) *AND* you understand the
|
|
* consequences. FPI isolates these, but it was designed with the Tor protocol in mind,
|
|
* and the Tor Browser has extra protection, including enhanced sanitizing per Identity.
|
|
* [1] https://http2.github.io/faq/
|
|
* [2] https://blog.scottlogic.com/2014/11/07/http-2-a-quick-look.html
|
|
* [3] https://queue.acm.org/detail.cfm?id=2716278
|
|
* [4] https://github.com/ghacksuserjs/ghacks-user.js/issues/107 ***/
|
|
user_pref("network.http.spdy.enabled", false);
|
|
user_pref("network.http.spdy.enabled.deps", false);
|
|
user_pref("network.http.spdy.enabled.http2", false);
|
|
/* 0703: disable HTTP Alternative Services [FF37+]
|
|
* [SETUP-PERF] Relax this if you have FPI enabled (see 4000) *AND* you understand the
|
|
* consequences. FPI isolates these, but it was designed with the Tor protocol in mind,
|
|
* and the Tor Browser has extra protection, including enhanced sanitizing per Identity.
|
|
* [1] https://tools.ietf.org/html/rfc7838#section-9
|
|
* [2] https://www.mnot.net/blog/2016/03/09/alt-svc ***/
|
|
user_pref("network.http.altsvc.enabled", false);
|
|
user_pref("network.http.altsvc.oe", false);
|
|
/* 0704: enforce the proxy server to do any DNS lookups when using SOCKS
|
|
* e.g. in Tor, this stops your local DNS server from knowing your Tor destination
|
|
* as a remote Tor node will handle the DNS request
|
|
* [1] http://kb.mozillazine.org/Network.proxy.socks_remote_dns
|
|
* [2] https://trac.torproject.org/projects/tor/wiki/doc/TorifyHOWTO/WebBrowsers ***/
|
|
user_pref("network.proxy.socks_remote_dns", true);
|
|
/* 0706: remove paths when sending URLs to PAC scripts [FF51+]
|
|
* CVE-2017-5384: Information disclosure via Proxy Auto-Config (PAC)
|
|
* [1] https://bugzilla.mozilla.org/1255474 ***/
|
|
user_pref("network.proxy.autoconfig_url.include_path", false); // [DEFAULT: false]
|
|
/* 0707: disable (or setup) DNS-over-HTTPS (DoH) [FF60+]
|
|
* TRR = Trusted Recursive Resolver
|
|
* .mode: 0=off, 1=race, 2=TRR first, 3=TRR only, 4=race for stats but always use native result
|
|
* [WARNING] DoH bypasses hosts and gives info to yet another party (e.g. Cloudflare)
|
|
* [1] https://www.ghacks.net/2018/04/02/configure-dns-over-https-in-firefox/
|
|
* [2] https://hacks.mozilla.org/2018/05/a-cartoon-intro-to-dns-over-https/ ***/
|
|
// user_pref("network.trr.mode", 0);
|
|
// user_pref("network.trr.bootstrapAddress", "");
|
|
// user_pref("network.trr.uri", "");
|
|
/* 0708: disable FTP [FF60+]
|
|
* [1] https://www.ghacks.net/2018/02/20/firefox-60-with-new-preference-to-disable-ftp/ ***/
|
|
// user_pref("network.ftp.enabled", false);
|
|
/* 0709: disable using UNC (Uniform Naming Convention) paths [FF61+]
|
|
* [1] https://trac.torproject.org/projects/tor/ticket/26424 ***/
|
|
user_pref("network.file.disable_unc_paths", true); // [HIDDEN PREF]
|
|
/* 0710: disable GIO as a potential proxy bypass vector
|
|
* Gvfs/GIO has a set of supported protocols like obex, network, archive, computer, dav, cdda,
|
|
* gphoto2, trash, etc. By default only smb and sftp protocols are accepted so far (as of FF64)
|
|
* [1] https://bugzilla.mozilla.org/1433507
|
|
* [2] https://trac.torproject.org/23044
|
|
* [3] https://en.wikipedia.org/wiki/GVfs
|
|
* [4] https://en.wikipedia.org/wiki/GIO_(software) ***/
|
|
user_pref("network.gio.supported-protocols", ""); // [HIDDEN PREF]
|
|
|
|
/*** [SECTION 0800]: LOCATION BAR / SEARCH BAR / SUGGESTIONS / HISTORY / FORMS [SETUP-CHROME]
|
|
If you are in a private environment (no unwanted eyeballs) and your device is private
|
|
(restricted access), and the device is secure when unattended (locked, encrypted, forensic
|
|
hardened), then items 0850 and above can be relaxed in return for more convenience and
|
|
functionality. Likewise, you may want to check the items cleared on shutdown in section 2800.
|
|
[NOTE] The urlbar is also commonly referred to as the location bar and address bar
|
|
#Required reading [#] https://xkcd.com/538/
|
|
***/
|
|
user_pref("_user.js.parrot", "0800 syntax error: the parrot's ceased to be!");
|
|
/* 0801: disable location bar using search
|
|
* don't leak typos to a search engine, give an error message instead ***/
|
|
user_pref("keyword.enabled", false);
|
|
/* 0802: disable location bar domain guessing
|
|
* domain guessing intercepts DNS "hostname not found errors" and resends a
|
|
* request (e.g. by adding www or .com). This is inconsistent use (e.g. FQDNs), does not work
|
|
* via Proxy Servers (different error), is a flawed use of DNS (TLDs: why treat .com
|
|
* as the 411 for DNS errors?), privacy issues (why connect to sites you didn't
|
|
* intend to), can leak sensitive data (e.g. query strings: e.g. Princeton attack),
|
|
* and is a security risk (e.g. common typos & malicious sites set up to exploit this) ***/
|
|
user_pref("browser.fixup.alternate.enabled", false);
|
|
/* 0803: display all parts of the url in the location bar ***/
|
|
user_pref("browser.urlbar.trimURLs", false);
|
|
/* 0804: limit history leaks via enumeration (PER TAB: back/forward)
|
|
* This is a PER TAB session history. You still have a full history stored under all history
|
|
* default=50, minimum=1=currentpage, 2 is the recommended minimum as some pages
|
|
* use it as a means of referral (e.g. hotlinking), 4 or 6 or 10 may be more practical ***/
|
|
user_pref("browser.sessionhistory.max_entries", 10);
|
|
/* 0805: disable CSS querying page history - CSS history leak
|
|
* [NOTE] This has NEVER been fully "resolved": in Mozilla/docs it is stated it's
|
|
* only in 'certain circumstances', also see latest comments in [2]
|
|
* [TEST] http://lcamtuf.coredump.cx/yahh/ (see github wiki APPENDIX C on how to use)
|
|
* [1] https://dbaron.org/mozilla/visited-privacy
|
|
* [2] https://bugzilla.mozilla.org/147777
|
|
* [3] https://developer.mozilla.org/docs/Web/CSS/Privacy_and_the_:visited_selector ***/
|
|
user_pref("layout.css.visited_links_enabled", false);
|
|
/* 0806: disable displaying javascript in history URLs ***/
|
|
user_pref("browser.urlbar.filter.javascript", true); // [DEFAULT: true]
|
|
/* 0807: disable search bar LIVE search suggestions
|
|
* [SETTING] Search>Provide search suggestions ***/
|
|
user_pref("browser.search.suggest.enabled", false);
|
|
/* 0808: disable location bar LIVE search suggestions (requires 0807 = true)
|
|
* Also disable the location bar prompt to enable/disable or learn more about it.
|
|
* [SETTING] Search>Show search suggestions in address bar results ***/
|
|
user_pref("browser.urlbar.suggest.searches", false);
|
|
user_pref("browser.urlbar.userMadeSearchSuggestionsChoice", true); // [FF41+]
|
|
/* 0809: disable location bar suggesting "preloaded" top websites [FF54+]
|
|
* [1] https://bugzilla.mozilla.org/1211726 ***/
|
|
user_pref("browser.urlbar.usepreloadedtopurls.enabled", false);
|
|
/* 0810: disable location bar making speculative connections [FF56+]
|
|
* [1] https://bugzilla.mozilla.org/1348275 ***/
|
|
user_pref("browser.urlbar.speculativeConnect.enabled", false);
|
|
/* 0850a: disable location bar autocomplete and suggestion types
|
|
* If you enforce any of the suggestion types, you MUST enforce 'autocomplete'
|
|
* - If *ALL* of the suggestion types are false, 'autocomplete' must also be false
|
|
* - If *ANY* of the suggestion types are true, 'autocomplete' must also be true
|
|
* [SETUP-CHROME] If all three suggestion types are false, search engine keywords are disabled
|
|
* [SETTING] Privacy & Security>Address Bar>When using the address bar, suggest ***/
|
|
user_pref("browser.urlbar.autocomplete.enabled", false);
|
|
user_pref("browser.urlbar.suggest.history", false);
|
|
user_pref("browser.urlbar.suggest.bookmark", false);
|
|
user_pref("browser.urlbar.suggest.openpage", false);
|
|
/* 0850c: disable location bar dropdown
|
|
* This value controls the total number of entries to appear in the location bar dropdown
|
|
* [NOTE] Items (bookmarks/history/openpages) with a high "frecency"/"bonus" will always
|
|
* be displayed (no we do not know how these are calculated or what the threshold is),
|
|
* and this does not affect the search by search engine suggestion (see 0808)
|
|
* [NOTE] This setting is only useful if you want to enable search engine keywords
|
|
* (i.e. at least one of 0850a suggestion types must be true) but you want to *limit* suggestions shown ***/
|
|
// user_pref("browser.urlbar.maxRichResults", 0);
|
|
/* 0850d: disable location bar autofill
|
|
* [1] http://kb.mozillazine.org/Inline_autocomplete ***/
|
|
user_pref("browser.urlbar.autoFill", false);
|
|
/* 0850e: disable location bar one-off searches [FF51+]
|
|
* [1] https://www.ghacks.net/2016/08/09/firefox-one-off-searches-address-bar/ ***/
|
|
user_pref("browser.urlbar.oneOffSearches", false);
|
|
/* 0850f: disable location bar suggesting local search history [FF57+]
|
|
* [1] https://bugzilla.mozilla.org/1181644 ***/
|
|
user_pref("browser.urlbar.maxHistoricalSearchSuggestions", 0);
|
|
/* 0860: disable search and form history
|
|
* [NOTE] You can clear formdata on exiting Firefox (see 2803)
|
|
* [SETTING] Privacy & Security>History>Custom Settings>Remember search and form history ***/
|
|
user_pref("browser.formfill.enable", false);
|
|
/* 0862: disable browsing and download history
|
|
* [NOTE] You can clear history and downloads on exiting Firefox (see 2803)
|
|
* [SETTING] Privacy & Security>History>Custom Settings>Remember browsing and download history ***/
|
|
// user_pref("places.history.enabled", false);
|
|
/* 0864: disable date/time picker
|
|
* This can leak your locale if not en-US
|
|
* [1] https://trac.torproject.org/projects/tor/ticket/21787 ***/
|
|
user_pref("dom.forms.datetime", false);
|
|
/* 0870: disable Windows jumplist [WINDOWS] ***/
|
|
user_pref("browser.taskbar.lists.enabled", false);
|
|
user_pref("browser.taskbar.lists.frequent.enabled", false);
|
|
user_pref("browser.taskbar.lists.recent.enabled", false);
|
|
user_pref("browser.taskbar.lists.tasks.enabled", false);
|
|
/* 0871: disable Windows taskbar preview [WINDOWS] ***/
|
|
user_pref("browser.taskbar.previews.enable", false);
|
|
|
|
/*** [SECTION 0900]: PASSWORDS ***/
|
|
user_pref("_user.js.parrot", "0900 syntax error: the parrot's expired!");
|
|
/* 0901: disable saving passwords
|
|
* [NOTE] This does not clear any passwords already saved
|
|
* [SETTING] Privacy & Security>Forms & Passwords>Ask to save logins and passwords for websites ***/
|
|
// user_pref("signon.rememberSignons", false);
|
|
/* 0902: use a master password (recommended if you save passwords)
|
|
* There are no preferences for this. It is all handled internally.
|
|
* [SETTING] Privacy & Security>Forms & Passwords>Use a master password
|
|
* [1] https://support.mozilla.org/kb/use-master-password-protect-stored-logins ***/
|
|
/* 0903: set how often Firefox should ask for the master password
|
|
* 0=the first time (default), 1=every time it's needed, 2=every n minutes (see 0904) ***/
|
|
user_pref("security.ask_for_password", 2);
|
|
/* 0904: set how often in minutes Firefox should ask for the master password (see 0903)
|
|
* in minutes, default is 30 ***/
|
|
user_pref("security.password_lifetime", 5);
|
|
/* 0905: disable auto-filling username & password form fields
|
|
* can leak in cross-site forms AND be spoofed
|
|
* [NOTE] Password will still be auto-filled after a user name is manually entered
|
|
* [1] http://kb.mozillazine.org/Signon.autofillForms ***/
|
|
user_pref("signon.autofillForms", false);
|
|
/* 0906: disable websites' autocomplete="off" [FF30+]
|
|
* Don't let sites dictate use of saved logins and passwords. Increase security through
|
|
* stronger password use. The trade-off is the convenience. Some sites should never be
|
|
* saved (such as banking sites). Set at true, informed users can make their own choice. ***/
|
|
user_pref("signon.storeWhenAutocompleteOff", true); // [DEFAULT: true]
|
|
/* 0907: display warnings for logins on non-secure (non HTTPS) pages
|
|
* [1] https://bugzilla.mozilla.org/1217156 ***/
|
|
user_pref("security.insecure_password.ui.enabled", true);
|
|
/* 0908: remove user & password info when attempting to fix an entered URL (i.e. 0802 is true)
|
|
* e.g. //user:password@foo -> //user@(prefix)foo(suffix) NOT //user:password@(prefix)foo(suffix) ***/
|
|
user_pref("browser.fixup.hide_user_pass", true);
|
|
/* 0909: disable formless login capture for Password Manager [FF51+] ***/
|
|
user_pref("signon.formlessCapture.enabled", false);
|
|
/* 0910: disable autofilling saved passwords on HTTP pages and show warning [FF52+]
|
|
* [1] https://www.fxsitecompat.com/en-CA/docs/2017/insecure-login-forms-now-disable-autofill-show-warning-beneath-input-control/
|
|
* [2] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1217152,1319119 ***/
|
|
user_pref("signon.autofillForms.http", false);
|
|
user_pref("security.insecure_field_warning.contextual.enabled", true);
|
|
/* 0912: limit (or disable) HTTP authentication credentials dialogs triggered by sub-resources [FF41+]
|
|
* hardens against potential credentials phishing
|
|
* 0=don't allow sub-resources to open HTTP authentication credentials dialogs
|
|
* 1=don't allow cross-origin sub-resources to open HTTP authentication credentials dialogs
|
|
* 2=allow sub-resources to open HTTP authentication credentials dialogs (default)
|
|
* [1] https://www.fxsitecompat.com/en-CA/docs/2015/http-auth-dialog-can-no-longer-be-triggered-by-cross-origin-resources/ ***/
|
|
user_pref("network.auth.subresource-http-auth-allow", 1);
|
|
|
|
/*** [SECTION 1000]: CACHE / SESSION (RE)STORE / FAVICONS [SETUP-CHROME]
|
|
ETAG [1] and other [2][3] cache tracking/fingerprinting techniques can be averted by
|
|
disabling *BOTH* disk (1001) and memory (1003) cache. ETAGs can also be neutralized
|
|
by modifying response headers [4]. Another solution is to use a hardened configuration
|
|
with Temporary Containers [5]. Alternatively, you can *LIMIT* exposure by clearing
|
|
cache on close (2803). or on a regular basis manually or with an extension.
|
|
[1] https://en.wikipedia.org/wiki/HTTP_ETag#Tracking_using_ETags
|
|
[2] https://robertheaton.com/2014/01/20/cookieless-user-tracking-for-douchebags/
|
|
[3] https://www.grepular.com/Preventing_Web_Tracking_via_the_Browser_Cache
|
|
[4] https://github.com/ghacksuserjs/ghacks-user.js/wiki/4.2.4-Header-Editor
|
|
[5] https://medium.com/@stoically/enhance-your-privacy-in-firefox-with-temporary-containers-33925cd6cd21
|
|
***/
|
|
user_pref("_user.js.parrot", "1000 syntax error: the parrot's gone to meet 'is maker!");
|
|
/** CACHE ***/
|
|
/* 1001: disable disk cache ***/
|
|
user_pref("browser.cache.disk.enable", false);
|
|
user_pref("browser.cache.disk.capacity", 0);
|
|
user_pref("browser.cache.disk.smart_size.enabled", false);
|
|
user_pref("browser.cache.disk.smart_size.first_run", false);
|
|
/* 1002: disable disk cache for SSL pages
|
|
* [1] http://kb.mozillazine.org/Browser.cache.disk_cache_ssl ***/
|
|
user_pref("browser.cache.disk_cache_ssl", false);
|
|
/* 1003: disable memory cache
|
|
* [NOTE] Not recommended due to performance issues ***/
|
|
// user_pref("browser.cache.memory.enable", false);
|
|
// user_pref("browser.cache.memory.capacity", 0); // [HIDDEN PREF]
|
|
/* 1005: disable fastback cache
|
|
* To improve performance when pressing back/forward Firefox stores visited pages
|
|
* so they don't have to be re-parsed. This is not the same as memory cache.
|
|
* 0=none, -1=auto (that's minus 1), or for other values see [1]
|
|
* [WARNING] Not recommended unless you know what you're doing
|
|
* [1] http://kb.mozillazine.org/Browser.sessionhistory.max_total_viewers ***/
|
|
// user_pref("browser.sessionhistory.max_total_viewers", 0);
|
|
/* 1006: disable permissions manager from writing to disk [RESTART]
|
|
* [NOTE] This means any permission changes are session only
|
|
* [1] https://bugzilla.mozilla.org/967812 ***/
|
|
// user_pref("permissions.memory_only", true); // [HIDDEN PREF]
|
|
/* 1008: set DNS cache and expiration time (default 400 and 60, same as Tor Browser) ***/
|
|
// user_pref("network.dnsCacheEntries", 400);
|
|
// user_pref("network.dnsCacheExpiration", 60);
|
|
|
|
/** SESSIONS & SESSION RESTORE ***/
|
|
/* 1020: exclude "Undo Closed Tabs" in Session Restore ***/
|
|
// user_pref("browser.sessionstore.max_tabs_undo", 0);
|
|
/* 1021: disable storing extra session data [SETUP-CHROME]
|
|
* extra session data contains contents of forms, scrollbar positions, cookies and POST data
|
|
* define on which sites to save extra session data:
|
|
* 0=everywhere, 1=unencrypted sites, 2=nowhere ***/
|
|
user_pref("browser.sessionstore.privacy_level", 2);
|
|
/* 1022: disable resuming session from crash ***/
|
|
// user_pref("browser.sessionstore.resume_from_crash", false);
|
|
/* 1023: set the minimum interval between session save operations
|
|
* Increasing this can help on older machines and some websites, as well as reducing writes, see [1]
|
|
* Default is 15000 (15 secs). Try 30000 (30 secs), 60000 (1 min) etc
|
|
* [SETUP-CHROME] This can also affect entries in the "Recently Closed Tabs" feature:
|
|
* i.e. the longer the interval the more chance a quick tab open/close won't be captured.
|
|
* This longer interval *may* affect history but we cannot replicate any history not recorded
|
|
* [1] https://bugzilla.mozilla.org/1304389 ***/
|
|
user_pref("browser.sessionstore.interval", 30000);
|
|
/* 1024: disable automatic Firefox start and session restore after reboot [FF62+] [WINDOWS]
|
|
* [1] https://bugzilla.mozilla.org/603903 ***/
|
|
user_pref("toolkit.winRegisterApplicationRestart", false);
|
|
|
|
/** FAVICONS ***/
|
|
/* 1030: disable favicons in shortcuts
|
|
* URL shortcuts use a cached randomly named .ico file which is stored in your
|
|
* profile/shortcutCache directory. The .ico remains after the shortcut is deleted.
|
|
* If set to false then the shortcuts use a generic Firefox icon ***/
|
|
user_pref("browser.shell.shortcutFavicons", false);
|
|
/* 1031: disable favicons in tabs and new bookmarks
|
|
* bookmark favicons are stored as data blobs in favicons.sqlite ***/
|
|
// user_pref("browser.chrome.site_icons", false);
|
|
/* 1032: disable favicons in web notifications ***/
|
|
user_pref("alerts.showFavicons", false); // [DEFAULT: false]
|
|
|
|
/*** [SECTION 1200]: HTTPS (SSL/TLS / OCSP / CERTS / HPKP / CIPHERS)
|
|
Note that your cipher and other settings can be used server side as a fingerprint attack
|
|
vector, see [1] (It's quite technical but the first part is easy to understand
|
|
and you can stop reading when you reach the second section titled "Enter Bro")
|
|
|
|
Option 1: Use defaults for ciphers (1260's). There is nothing *weak* about these, but
|
|
due to breakage, browsers can't deprecate them until the web stops using them
|
|
Option 2: Disable the ciphers in 1261, 1262 and 1263. These shouldn't break anything.
|
|
Optionally, disable the ciphers in 1264.
|
|
|
|
[1] https://www.securityartwork.es/2017/02/02/tls-client-fingerprinting-with-bro/
|
|
***/
|
|
user_pref("_user.js.parrot", "1200 syntax error: the parrot's a stiff!");
|
|
/** SSL (Secure Sockets Layer) / TLS (Transport Layer Security) ***/
|
|
/* 1201: disable old SSL/TLS "insecure" renegotiation (vulnerable to a MiTM attack)
|
|
* [SETUP-WEB] <2% of secure sites do NOT support the newer "secure" renegotiation, see [2]
|
|
* [1] https://wiki.mozilla.org/Security:Renegotiation
|
|
* [2] https://www.ssllabs.com/ssl-pulse/ ***/
|
|
user_pref("security.ssl.require_safe_negotiation", true);
|
|
/* 1202: control TLS versions with min and max
|
|
* 1=TLS 1.0, 2=TLS 1.1, 3=TLS 1.2, 4=TLS 1.3
|
|
* [NOTE] Jul-2017: Telemetry indicates approx 2% of TLS web traffic uses 1.0 or 1.1
|
|
* [1] http://kb.mozillazine.org/Security.tls.version.*
|
|
* [2] https://www.ssl.com/how-to/turn-off-ssl-3-0-and-tls-1-0-in-your-browser/
|
|
* [2] archived: https://archive.is/hY2Mm ***/
|
|
// user_pref("security.tls.version.min", 3);
|
|
user_pref("security.tls.version.max", 4);
|
|
/* 1203: disable SSL session tracking [FF36+]
|
|
* SSL Session IDs are unique, last up to 24hrs in Firefox, and can be used for tracking
|
|
* [SETUP-PERF] Relax this if you have FPI enabled (see 4000) *AND* you understand the
|
|
* consequences. FPI isolates these, but it was designed with the Tor protocol in mind,
|
|
* and the Tor Browser has extra protection, including enhanced sanitizing per Identity.
|
|
* [1] https://tools.ietf.org/html/rfc5077
|
|
* [2] https://bugzilla.mozilla.org/967977
|
|
* [3] https://arxiv.org/abs/1810.07304 ***/
|
|
user_pref("security.ssl.disable_session_identifiers", true); // [HIDDEN PREF]
|
|
/* 1204: disable SSL Error Reporting
|
|
* [1] https://firefox-source-docs.mozilla.org/browser/base/sslerrorreport/preferences.html ***/
|
|
user_pref("security.ssl.errorReporting.automatic", false);
|
|
user_pref("security.ssl.errorReporting.enabled", false);
|
|
user_pref("security.ssl.errorReporting.url", "");
|
|
/* 1205: disable TLS1.3 0-RTT (round-trip time) [FF51+]
|
|
* [1] https://github.com/tlswg/tls13-spec/issues/1001
|
|
* [2] https://blog.cloudflare.com/tls-1-3-overview-and-q-and-a/ ***/
|
|
user_pref("security.tls.enable_0rtt_data", false);
|
|
|
|
/** OCSP (Online Certificate Status Protocol)
|
|
#Required reading [#] https://scotthelme.co.uk/revocation-is-broken/ ***/
|
|
/* 1210: enable OCSP Stapling
|
|
* [1] https://blog.mozilla.org/security/2013/07/29/ocsp-stapling-in-firefox/ ***/
|
|
user_pref("security.ssl.enable_ocsp_stapling", true);
|
|
/* 1211: control when to use OCSP fetching (to confirm current validity of certificates)
|
|
* 0=disabled, 1=enabled (default), 2=enabled for EV certificates only
|
|
* OCSP (non-stapled) leaks information about the sites you visit to the CA (cert authority)
|
|
* It's a trade-off between security (checking) and privacy (leaking info to the CA)
|
|
* [NOTE] This pref only controls OCSP fetching and does not affect OCSP stapling
|
|
* [1] https://en.wikipedia.org/wiki/Ocsp ***/
|
|
user_pref("security.OCSP.enabled", 1);
|
|
/* 1212: set OCSP fetch failures (non-stapled, see 1211) to hard-fail [SETUP-WEB]
|
|
* When a CA cannot be reached to validate a cert, Firefox just continues the connection (=soft-fail)
|
|
* Setting this pref to true tells Firefox to instead terminate the connection (=hard-fail)
|
|
* It is pointless to soft-fail when an OCSP fetch fails: you cannot confirm a cert is still valid (it
|
|
* could have been revoked) and/or you could be under attack (e.g. malicious blocking of OCSP servers)
|
|
* [1] https://blog.mozilla.org/security/2013/07/29/ocsp-stapling-in-firefox/
|
|
* [2] https://www.imperialviolet.org/2014/04/19/revchecking.html ***/
|
|
user_pref("security.OCSP.require", true);
|
|
|
|
/** CERTS / HPKP (HTTP Public Key Pinning) ***/
|
|
/* 1220: disable or limit SHA-1 certificates
|
|
* 0=all SHA1 certs are allowed
|
|
* 1=all SHA1 certs are blocked
|
|
* 2=deprecated option that now maps to 1
|
|
* 3=only allowed for locally-added roots (e.g. anti-virus)
|
|
* 4=only allowed for locally-added roots or for certs in 2015 and earlier
|
|
* [SETUP-CHROME] When disabled, some man-in-the-middle devices (e.g. security scanners and
|
|
* antivirus products, may fail to connect to HTTPS sites. SHA-1 is *almost* obsolete.
|
|
* [1] https://blog.mozilla.org/security/2016/10/18/phasing-out-sha-1-on-the-public-web/ ***/
|
|
user_pref("security.pki.sha1_enforcement_level", 1);
|
|
/* 1221: disable Windows 8.1's Microsoft Family Safety cert [FF50+] [WINDOWS]
|
|
* 0=disable detecting Family Safety mode and importing the root
|
|
* 1=only attempt to detect Family Safety mode (don't import the root)
|
|
* 2=detect Family Safety mode and import the root
|
|
* [1] https://trac.torproject.org/projects/tor/ticket/21686 ***/
|
|
user_pref("security.family_safety.mode", 0);
|
|
/* 1222: disable intermediate certificate caching (fingerprinting attack vector) [RESTART]
|
|
* [NOTE] This affects login/cert/key dbs. The effect is all credentials are session-only.
|
|
* Saved logins and passwords are not available. Reset the pref and restart to return them.
|
|
* [TEST] https://fiprinca.0x90.eu/poc/
|
|
* [1] https://bugzilla.mozilla.org/1334485 - related bug
|
|
* [2] https://bugzilla.mozilla.org/1216882 - related bug (see comment 9) ***/
|
|
// user_pref("security.nocertdb", true); // [HIDDEN PREF]
|
|
/* 1223: enforce strict pinning
|
|
* PKP (Public Key Pinning) 0=disabled 1=allow user MiTM (such as your antivirus), 2=strict
|
|
* [WARNING] If you rely on an AV (antivirus) to protect your web browsing
|
|
* by inspecting ALL your web traffic, then leave at current default=1
|
|
* [1] https://trac.torproject.org/projects/tor/ticket/16206 ***/
|
|
user_pref("security.cert_pinning.enforcement_level", 2);
|
|
|
|
/** MIXED CONTENT ***/
|
|
/* 1240: disable insecure active content on https pages
|
|
* [1] https://trac.torproject.org/projects/tor/ticket/21323 ***/
|
|
user_pref("security.mixed_content.block_active_content", true); // [DEFAULT: true]
|
|
/* 1241: disable insecure passive content (such as images) on https pages ***/
|
|
user_pref("security.mixed_content.block_display_content", true);
|
|
/* 1243: block unencrypted requests from Flash on encrypted pages to mitigate MitM attacks [FF59+]
|
|
* [1] https://bugzilla.mozilla.org/1190623 ***/
|
|
user_pref("security.mixed_content.block_object_subrequest", true);
|
|
|
|
/** CIPHERS [see the section 1200 intro] ***/
|
|
/* 1261: disable 3DES (effective key size < 128)
|
|
* [1] https://en.wikipedia.org/wiki/3des#Security
|
|
* [2] http://en.citizendium.org/wiki/Meet-in-the-middle_attack
|
|
* [3] https://www-archive.mozilla.org/projects/security/pki/nss/ssl/fips-ssl-ciphersuites.html ***/
|
|
// user_pref("security.ssl3.rsa_des_ede3_sha", false);
|
|
/* 1262: disable 128 bits ***/
|
|
// user_pref("security.ssl3.ecdhe_ecdsa_aes_128_sha", false);
|
|
// user_pref("security.ssl3.ecdhe_rsa_aes_128_sha", false);
|
|
/* 1263: disable DHE (Diffie-Hellman Key Exchange)
|
|
* [1] https://www.eff.org/deeplinks/2015/10/how-to-protect-yourself-from-nsa-attacks-1024-bit-DH ***/
|
|
// user_pref("security.ssl3.dhe_rsa_aes_128_sha", false);
|
|
// user_pref("security.ssl3.dhe_rsa_aes_256_sha", false);
|
|
/* 1264: disable the remaining non-modern cipher suites as of FF52 ***/
|
|
// user_pref("security.ssl3.rsa_aes_128_sha", false);
|
|
// user_pref("security.ssl3.rsa_aes_256_sha", false);
|
|
|
|
/** UI (User Interface) ***/
|
|
/* 1270: display warning (red padlock) for "broken security" (see 1201)
|
|
* [1] https://wiki.mozilla.org/Security:Renegotiation ***/
|
|
user_pref("security.ssl.treat_unsafe_negotiation_as_broken", true);
|
|
/* 1271: control "Add Security Exception" dialog on SSL warnings
|
|
* 0=do neither 1=pre-populate url 2=pre-populate url + pre-fetch cert (default)
|
|
* [1] https://github.com/pyllyukko/user.js/issues/210 ***/
|
|
user_pref("browser.ssl_override_behavior", 1);
|
|
/* 1272: display advanced information on Insecure Connection warning pages
|
|
* only works when it's possible to add an exception
|
|
* i.e. it doesn't work for HSTS discrepancies (https://subdomain.preloaded-hsts.badssl.com/)
|
|
* [TEST] https://expired.badssl.com/ ***/
|
|
user_pref("browser.xul.error_pages.expert_bad_cert", true);
|
|
/* 1273: display "insecure" icon and "Not Secure" text on HTTP sites ***/
|
|
user_pref("security.insecure_connection_icon.enabled", true); // [FF59+]
|
|
user_pref("security.insecure_connection_text.enabled", true); // [FF60+]
|
|
// user_pref("security.insecure_connection_icon.pbmode.enabled", true); // [FF59+] private windows only
|
|
// user_pref("security.insecure_connection_text.pbmode.enabled", true); // [FF60+] private windows only
|
|
|
|
/*** [SECTION 1400]: FONTS ***/
|
|
user_pref("_user.js.parrot", "1400 syntax error: the parrot's bereft of life!");
|
|
/* 1401: disable websites choosing fonts (0=block, 1=allow)
|
|
* If you disallow fonts, this drastically limits/reduces font
|
|
* enumeration (by JS) which is a high entropy fingerprinting vector.
|
|
* [NOTE] Disabling fonts can uglify the web a fair bit.
|
|
* [SETTING] General>Language and Appearance>Fonts & Colors>Advanced>Allow pages to choose... ***/
|
|
user_pref("browser.display.use_document_fonts", 0);
|
|
/* 1402: set more legible default fonts
|
|
* [NOTE] Example below for Windows/Western only
|
|
* [SETTING] General>Language and Appearance>Fonts & Colors>Advanced>Serif|Sans-serif|Monospace ***/
|
|
// user_pref("font.name.serif.x-unicode", "Georgia");
|
|
// user_pref("font.name.serif.x-western", "Georgia"); // default: Times New Roman
|
|
// user_pref("font.name.sans-serif.x-unicode", "Arial");
|
|
// user_pref("font.name.sans-serif.x-western", "Arial"); // default: Arial
|
|
// user_pref("font.name.monospace.x-unicode", "Lucida Console");
|
|
// user_pref("font.name.monospace.x-western", "Lucida Console"); // default: Courier New
|
|
/* 1403: disable icon fonts (glyphs) and local fallback rendering
|
|
* [1] https://bugzilla.mozilla.org/789788
|
|
* [2] https://trac.torproject.org/projects/tor/ticket/8455 ***/
|
|
// user_pref("gfx.downloadable_fonts.enabled", false); // [FF41+]
|
|
// user_pref("gfx.downloadable_fonts.fallback_delay", -1);
|
|
/* 1404: disable rendering of SVG OpenType fonts
|
|
* [1] https://wiki.mozilla.org/SVGOpenTypeFonts - iSECPartnersReport recommends to disable this ***/
|
|
user_pref("gfx.font_rendering.opentype_svg.enabled", false);
|
|
/* 1405: disable WOFF2 (Web Open Font Format) [FF35+] ***/
|
|
user_pref("gfx.downloadable_fonts.woff2.enabled", false);
|
|
/* 1406: disable CSS Font Loading API
|
|
* [NOTE] Disabling fonts can uglify the web a fair bit. ***/
|
|
user_pref("layout.css.font-loading-api.enabled", false);
|
|
/* 1407: disable special underline handling for a few fonts which you will probably never use [RESTART]
|
|
* Any of these fonts on your system can be enumerated for fingerprinting.
|
|
* [1] http://kb.mozillazine.org/Font.blacklist.underline_offset ***/
|
|
user_pref("font.blacklist.underline_offset", "");
|
|
/* 1408: disable graphite which FF49 turned back on by default
|
|
* In the past it had security issues. Update: This continues to be the case, see [1]
|
|
* [1] https://www.mozilla.org/security/advisories/mfsa2017-15/#CVE-2017-7778 ***/
|
|
user_pref("gfx.font_rendering.graphite.enabled", false);
|
|
/* 1409: limit system font exposure to a whitelist [FF52+] [RESTART]
|
|
* If the whitelist is empty, then whitelisting is considered disabled and all fonts are allowed.
|
|
* [WARNING] Creating your own probably highly-unique whitelist will raise your entropy.
|
|
* Eventually privacy.resistFingerprinting (see 4500) will cover this (and 1401 can be relaxed)
|
|
* [1] https://bugzilla.mozilla.org/1121643 ***/
|
|
// user_pref("font.system.whitelist", ""); // [HIDDEN PREF]
|
|
|
|
/*** [SECTION 1600]: HEADERS / REFERERS
|
|
Only *cross domain* referers need controlling and XOriginPolicy (1603) is perfect for that. Thus we enforce
|
|
the default values for 1601, 1602, 1605 and 1606 to minimize breakage, and only tweak 1603 and 1604.
|
|
|
|
Our default settings provide the best balance between protection and amount of breakage.
|
|
To harden it a bit more you can set XOriginPolicy (1603) to 2 (+ optionally 1604 to 1 or 2).
|
|
To fix broken sites (including your modem/router), temporarily set XOriginPolicy=0 and XOriginTrimmingPolicy=2 in about:config,
|
|
use the site and then change the values back. If you visit those sites regularly (e.g. vimeo), use an extension.
|
|
|
|
full URI: https://example.com:8888/foo/bar.html?id=1234
|
|
scheme+host+port+path: https://example.com:8888/foo/bar.html
|
|
scheme+host+port: https://example.com:8888
|
|
|
|
#Required reading [#] https://feeding.cloud.geek.nz/posts/tweaking-referrer-for-privacy-in-firefox/
|
|
***/
|
|
user_pref("_user.js.parrot", "1600 syntax error: the parrot rests in peace!");
|
|
/* 1601: ALL: control when images/links send a referer
|
|
* 0=never, 1=send only when links are clicked, 2=for links and images (default) ***/
|
|
user_pref("network.http.sendRefererHeader", 2);
|
|
/* 1602: ALL: control the amount of information to send
|
|
* 0=send full URI (default), 1=scheme+host+port+path, 2=scheme+host+port ***/
|
|
user_pref("network.http.referer.trimmingPolicy", 0);
|
|
/* 1603: CROSS ORIGIN: control when to send a referer [SETUP-WEB]
|
|
* 0=always (default), 1=only if base domains match, 2=only if hosts match ***/
|
|
user_pref("network.http.referer.XOriginPolicy", 1);
|
|
/* 1604: CROSS ORIGIN: control the amount of information to send [FF52+]
|
|
* 0=send full URI (default), 1=scheme+host+port+path, 2=scheme+host+port ***/
|
|
user_pref("network.http.referer.XOriginTrimmingPolicy", 0);
|
|
/* 1605: ALL: disable spoofing a referer
|
|
* [WARNING] Do not set this to true, as spoofing effectively disables the anti-CSRF
|
|
* (Cross-Site Request Forgery) protections that some sites may rely on ***/
|
|
user_pref("network.http.referer.spoofSource", false); // [DEFAULT: false]
|
|
/* 1606: ALL: set the default Referrer Policy [FF59+]
|
|
* 0=no-referer, 1=same-origin, 2=strict-origin-when-cross-origin, 3=no-referrer-when-downgrade
|
|
* [NOTE] This is only a default, it can be overridden by a site-controlled Referrer Policy
|
|
* [1] https://www.w3.org/TR/referrer-policy/
|
|
* [2] https://developer.mozilla.org/docs/Web/HTTP/Headers/Referrer-Policy
|
|
* [3] https://blog.mozilla.org/security/2018/01/31/preventing-data-leaks-by-stripping-path-information-in-http-referrers/ ***/
|
|
user_pref("network.http.referer.defaultPolicy", 3); // [DEFAULT: 3]
|
|
user_pref("network.http.referer.defaultPolicy.pbmode", 2); // [DEFAULT: 2]
|
|
/* 1607: TOR: hide (not spoof) referrer when leaving a .onion domain [FF54+]
|
|
* [NOTE] Firefox cannot access .onion sites by default. We recommend you use
|
|
* the Tor Browser which is specifically designed for hidden services
|
|
* [1] https://bugzilla.mozilla.org/1305144 ***/
|
|
user_pref("network.http.referer.hideOnionSource", true);
|
|
/* 1610: ALL: enable the DNT (Do Not Track) HTTP header
|
|
* [NOTE] DNT is enforced with TP (see 0420) regardless of this pref
|
|
* [SETTING] Privacy & Security>Content Blocking>Send websites a "Do Not Track"... ***/
|
|
user_pref("privacy.donottrackheader.enabled", true);
|
|
|
|
/*** [SECTION 1700]: CONTAINERS
|
|
If you want to *really* leverage containers, we highly recommend Temporary Containers [2].
|
|
Read the article by the extension author [3], and check out the github wiki/repo [4].
|
|
[1] https://wiki.mozilla.org/Security/Contextual_Identity_Project/Containers
|
|
[2] https://addons.mozilla.org/firefox/addon/temporary-containers/
|
|
[3] https://medium.com/@stoically/enhance-your-privacy-in-firefox-with-temporary-containers-33925cd6cd21
|
|
[4] https://github.com/stoically/temporary-containers/wiki
|
|
***/
|
|
user_pref("_user.js.parrot", "1700 syntax error: the parrot's bit the dust!");
|
|
/* 1701: enable Container Tabs setting in preferences (see 1702) [FF50+]
|
|
* [1] https://bugzilla.mozilla.org/1279029 ***/
|
|
user_pref("privacy.userContext.ui.enabled", true);
|
|
/* 1702: enable Container Tabs [FF50+]
|
|
* [SETTING] General>Tabs>Enable Container Tabs ***/
|
|
user_pref("privacy.userContext.enabled", true);
|
|
/* 1703: enable a private container for thumbnail loads [FF51+] ***/
|
|
user_pref("privacy.usercontext.about_newtab_segregation.enabled", true); // [DEFAULT: true in FF61+]
|
|
/* 1704: set behaviour on "+ Tab" button to display container menu [FF53+] [SETUP-CHROME]
|
|
* 0=no menu (default), 1=show when clicked, 2=show on long press
|
|
* [NOTE] The menu does not contain a non-container tab option (use Ctrl+T to open non-container tab)
|
|
* [1] https://bugzilla.mozilla.org/1328756 ***/
|
|
user_pref("privacy.userContext.longPressBehavior", 2);
|
|
|
|
/*** [SECTION 1800]: PLUGINS ***/
|
|
user_pref("_user.js.parrot", "1800 syntax error: the parrot's pushing up daisies!");
|
|
/* 1801: set default plugin state (i.e. new plugins on discovery) to never activate
|
|
* 0=disabled, 1=ask to activate, 2=active - you can override individual plugins ***/
|
|
user_pref("plugin.default.state", 0);
|
|
user_pref("plugin.defaultXpi.state", 0);
|
|
/* 1802: enable click to play and set to 0 minutes ***/
|
|
user_pref("plugins.click_to_play", true);
|
|
user_pref("plugin.sessionPermissionNow.intervalInMinutes", 0);
|
|
/* 1803: disable Flash plugin (Add-ons>Plugins)
|
|
* 0=deactivated, 1=ask, 2=enabled
|
|
* ESR52.x is the last branch to *fully* support NPAPI, FF52+ stable only supports Flash
|
|
* [NOTE] You can still override individual sites via site permissions
|
|
* [1] https://www.ghacks.net/2013/07/09/how-to-make-sure-that-a-firefox-plugin-never-activates-again/ ***/
|
|
user_pref("plugin.state.flash", 0);
|
|
/* 1805: disable scanning for plugins [WINDOWS]
|
|
* [1] http://kb.mozillazine.org/Plugin_scanning
|
|
* plid.all = whether to scan the directories specified in the Windows registry for PLIDs.
|
|
* Used to detect RealPlayer, Java, Antivirus etc, but since FF52 only covers Flash ***/
|
|
user_pref("plugin.scan.plid.all", false);
|
|
/* 1820: disable all GMP (Gecko Media Plugins) [SETUP-WEB]
|
|
* [1] https://wiki.mozilla.org/GeckoMediaPlugins ***/
|
|
user_pref("media.gmp-provider.enabled", false);
|
|
user_pref("media.gmp.trial-create.enabled", false);
|
|
user_pref("media.gmp-manager.url", "data:text/plain,");
|
|
user_pref("media.gmp-manager.url.override", "data:text/plain,"); // [HIDDEN PREF]
|
|
user_pref("media.gmp-manager.updateEnabled", false); // disable local fallback [HIDDEN PREF]
|
|
/* 1825: disable widevine CDM (Content Decryption Module) [SETUP-WEB] ***/
|
|
user_pref("media.gmp-widevinecdm.visible", false);
|
|
user_pref("media.gmp-widevinecdm.enabled", false);
|
|
user_pref("media.gmp-widevinecdm.autoupdate", false);
|
|
/* 1830: disable all DRM content (EME: Encryption Media Extension) [SETUP-WEB]
|
|
* [SETTING] General>DRM Content>Play DRM-controlled content
|
|
* [1] https://www.eff.org/deeplinks/2017/10/drms-dead-canary-how-we-just-lost-web-what-we-learned-it-and-what-we-need-do-next ***/
|
|
user_pref("media.eme.enabled", false);
|
|
/* 1840: disable the OpenH264 Video Codec by Cisco to "Never Activate" [SETUP-WEB]
|
|
* This is the bundled codec used for video chat in WebRTC ***/
|
|
user_pref("media.gmp-gmpopenh264.enabled", false); // [HIDDEN PREF]
|
|
user_pref("media.gmp-gmpopenh264.autoupdate", false);
|
|
|
|
/*** [SECTION 2000]: MEDIA / CAMERA / MIC ***/
|
|
user_pref("_user.js.parrot", "2000 syntax error: the parrot's snuffed it!");
|
|
/* 2001: disable WebRTC (Web Real-Time Communication)
|
|
* [1] https://www.privacytools.io/#webrtc ***/
|
|
user_pref("media.peerconnection.enabled", false);
|
|
/* 2002: limit WebRTC IP leaks if using WebRTC
|
|
* [TEST] https://browserleaks.com/webrtc
|
|
* [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1189041,1297416
|
|
* [2] https://wiki.mozilla.org/Media/WebRTC/Privacy ***/
|
|
user_pref("media.peerconnection.ice.default_address_only", true);
|
|
user_pref("media.peerconnection.ice.no_host", true); // [FF51+]
|
|
/* 2010: disable WebGL (Web Graphics Library), force bare minimum feature set if used & disable WebGL extensions
|
|
* [1] https://www.contextis.com/resources/blog/webgl-new-dimension-browser-exploitation/
|
|
* [2] https://security.stackexchange.com/questions/13799/is-webgl-a-security-concern ***/
|
|
user_pref("webgl.disabled", true);
|
|
user_pref("pdfjs.enableWebGL", false);
|
|
user_pref("webgl.min_capability_mode", true);
|
|
user_pref("webgl.disable-extensions", true);
|
|
user_pref("webgl.disable-fail-if-major-performance-caveat", true);
|
|
/* 2012: disable two more webgl preferences [FF51+] ***/
|
|
user_pref("webgl.dxgl.enabled", false); // [WINDOWS]
|
|
user_pref("webgl.enable-webgl2", false);
|
|
/* 2022: disable screensharing ***/
|
|
user_pref("media.getusermedia.screensharing.enabled", false);
|
|
user_pref("media.getusermedia.browser.enabled", false);
|
|
user_pref("media.getusermedia.audiocapture.enabled", false);
|
|
/* 2024: set a default permission for Camera/Microphone [FF58+]
|
|
* 0=always ask (default), 1=allow, 2=block
|
|
* [SETTING] to add site exceptions: Page Info>Permissions>Use the Camera/Microphone
|
|
* [SETTING] to manage site exceptions: Options>Privacy & Security>Permissions>Camera/Microphone>Settings ***/
|
|
// user_pref("permissions.default.camera", 2);
|
|
// user_pref("permissions.default.microphone", 2);
|
|
/* 2026: disable canvas capture stream [FF41+]
|
|
* [1] https://developer.mozilla.org/docs/Web/API/HTMLCanvasElement/captureStream ***/
|
|
user_pref("canvas.capturestream.enabled", false);
|
|
/* 2027: disable camera image capture [FF35+]
|
|
* [1] https://trac.torproject.org/projects/tor/ticket/16339 ***/
|
|
user_pref("dom.imagecapture.enabled", false); // [DEFAULT: false]
|
|
/* 2028: disable offscreen canvas [FF44+]
|
|
* [1] https://developer.mozilla.org/docs/Web/API/OffscreenCanvas ***/
|
|
user_pref("gfx.offscreencanvas.enabled", false); // [DEFAULT: false]
|
|
/* 2030: disable auto-play of HTML5 media [FF63+]
|
|
* 0=Allowed (default), 1=Blocked, 2=Prompt
|
|
* [SETUP-WEB] This may break video playback on various sites ***/
|
|
user_pref("media.autoplay.default", 1);
|
|
/* 2031: disable audio auto-play in non-active tabs [FF51+]
|
|
* [1] https://www.ghacks.net/2016/11/14/firefox-51-blocks-automatic-audio-playback-in-non-active-tabs/ ***/
|
|
user_pref("media.block-autoplay-until-in-foreground", true);
|
|
|
|
/*** [SECTION 2200]: WINDOW MEDDLING & LEAKS / POPUPS ***/
|
|
user_pref("_user.js.parrot", "2200 syntax error: the parrot's 'istory!");
|
|
/* 2201: prevent websites from disabling new window features
|
|
* [1] http://kb.mozillazine.org/Prevent_websites_from_disabling_new_window_features ***/
|
|
user_pref("dom.disable_window_open_feature.close", true);
|
|
user_pref("dom.disable_window_open_feature.location", true); // [DEFAULT: true]
|
|
user_pref("dom.disable_window_open_feature.menubar", true);
|
|
user_pref("dom.disable_window_open_feature.minimizable", true);
|
|
user_pref("dom.disable_window_open_feature.personalbar", true); // bookmarks toolbar
|
|
user_pref("dom.disable_window_open_feature.resizable", true); // [DEFAULT: true]
|
|
user_pref("dom.disable_window_open_feature.status", true); // [DEFAULT: true]
|
|
user_pref("dom.disable_window_open_feature.titlebar", true);
|
|
user_pref("dom.disable_window_open_feature.toolbar", true);
|
|
/* 2202: prevent scripts from moving and resizing open windows ***/
|
|
user_pref("dom.disable_window_move_resize", true);
|
|
/* 2203: open links targeting new windows in a new tab instead
|
|
* This stops malicious window sizes and some screen resolution leaks.
|
|
* You can still right-click a link and open in a new window.
|
|
* [TEST] https://people.torproject.org/~gk/misc/entire_desktop.html
|
|
* [1] https://trac.torproject.org/projects/tor/ticket/9881 ***/
|
|
user_pref("browser.link.open_newwindow", 3);
|
|
user_pref("browser.link.open_newwindow.restriction", 0);
|
|
/* 2204: disable Fullscreen API (requires user interaction) to prevent screen-resolution leaks
|
|
* [NOTE] You can still manually toggle the browser's fullscreen state (F11),
|
|
* but this pref will disable embedded video/game fullscreen controls, e.g. youtube
|
|
* [TEST] https://developer.mozilla.org/samples/domref/fullscreen.html ***/
|
|
// user_pref("full-screen-api.enabled", false);
|
|
/* 2210: block popup windows
|
|
* [SETTING] Privacy & Security>Permissions>Block pop-up windows ***/
|
|
user_pref("dom.disable_open_during_load", true);
|
|
/* 2211: set max popups from a single non-click event - default is 20! ***/
|
|
user_pref("dom.popup_maximum", 3);
|
|
/* 2212: limit events that can cause a popup
|
|
* default is "change click dblclick mouseup pointerup notificationclick reset submit touchend"
|
|
* [1] http://kb.mozillazine.org/Dom.popup_allowed_events ***/
|
|
user_pref("dom.popup_allowed_events", "click dblclick");
|
|
|
|
/*** [SECTION 2300]: WEB WORKERS
|
|
A worker is a JS "background task" running in a global context, i.e. it is different from
|
|
the current window. Workers can spawn new workers (must be the same origin & scheme),
|
|
including service and shared workers. Shared workers can be utilized by multiple scripts and
|
|
communicate between browsing contexts (windows/tabs/iframes) and can even control your cache.
|
|
|
|
[SETUP-WEB] Disabling "web workers" might break sites
|
|
[UPDATE] uMatrix 1.2.0+ allows a per-scope control for workers (2301-deprecated) and service workers (2302)
|
|
#Required reading [#] https://github.com/gorhill/uMatrix/releases/tag/1.2.0
|
|
|
|
[1] Web Workers: https://developer.mozilla.org/docs/Web/API/Web_Workers_API
|
|
[2] Worker: https://developer.mozilla.org/docs/Web/API/Worker
|
|
[3] Service Worker: https://developer.mozilla.org/docs/Web/API/Service_Worker_API
|
|
[4] SharedWorker: https://developer.mozilla.org/docs/Web/API/SharedWorker
|
|
[5] ChromeWorker: https://developer.mozilla.org/docs/Web/API/ChromeWorker
|
|
[6] Notifications: https://support.mozilla.org/questions/1165867#answer-981820
|
|
***/
|
|
user_pref("_user.js.parrot", "2300 syntax error: the parrot's off the twig!");
|
|
/* 2302: disable service workers [FF32, FF44-compat]
|
|
* Service workers essentially act as proxy servers that sit between web apps, and the browser
|
|
* and network, are event driven, and can control the web page/site it is associated with,
|
|
* intercepting and modifying navigation and resource requests, and caching resources.
|
|
* [NOTE] Service worker APIs are hidden (in Firefox) and cannot be used when in PB mode.
|
|
* [NOTE] Service workers only run over HTTPS. Service Workers have no DOM access. ***/
|
|
user_pref("dom.serviceWorkers.enabled", false);
|
|
/* 2304: disable web notifications
|
|
* [1] https://developer.mozilla.org/docs/Web/API/Notifications_API ***/
|
|
user_pref("dom.webnotifications.enabled", false); // [FF22+]
|
|
user_pref("dom.webnotifications.serviceworker.enabled", false); // [FF44+]
|
|
/* 2305: set a default permission for Notifications (see 2304) [FF58+]
|
|
* 0=always ask (default), 1=allow, 2=block
|
|
* [NOTE] best left at default "always ask", fingerprintable via Permissions API
|
|
* [SETTING] to add site exceptions: Page Info>Permissions>Receive Notifications
|
|
* [SETTING] to manage site exceptions: Options>Privacy & Security>Permissions>Notifications>Settings ***/
|
|
// user_pref("permissions.default.desktop-notification", 2);
|
|
/* 2306: disable push notifications [FF44+]
|
|
* web apps can receive messages pushed to them from a server, whether or
|
|
* not the web app is in the foreground, or even currently loaded
|
|
* [1] https://developer.mozilla.org/docs/Web/API/Push_API ***/
|
|
user_pref("dom.push.enabled", false);
|
|
user_pref("dom.push.connection.enabled", false);
|
|
user_pref("dom.push.serverURL", "");
|
|
user_pref("dom.push.userAgentID", "");
|
|
|
|
/*** [SECTION 2400]: DOM (DOCUMENT OBJECT MODEL) & JAVASCRIPT ***/
|
|
user_pref("_user.js.parrot", "2400 syntax error: the parrot's kicked the bucket!");
|
|
/* 2401: disable website control over browser right-click context menu
|
|
* [NOTE] Shift-Right-Click will always bring up the browser right-click context menu ***/
|
|
// user_pref("dom.event.contextmenu.enabled", false);
|
|
/* 2402: disable website access to clipboard events/content
|
|
* [SETUP-WEB] This will break some sites functionality such as pasting into facebook, wordpress
|
|
* this applies to onCut, onCopy, onPaste events - i.e. you have to interact with
|
|
* the website for it to look at the clipboard
|
|
* [1] https://www.ghacks.net/2014/01/08/block-websites-reading-modifying-clipboard-contents-firefox/ ***/
|
|
user_pref("dom.event.clipboardevents.enabled", false);
|
|
/* 2403: disable clipboard commands (cut/copy) from "non-privileged" content [FF41+]
|
|
* this disables document.execCommand("cut"/"copy") to protect your clipboard
|
|
* [1] https://bugzilla.mozilla.org/1170911 ***/
|
|
user_pref("dom.allow_cut_copy", false); // [HIDDEN PREF]
|
|
/* 2404: disable "Confirm you want to leave" dialog on page close
|
|
* Does not prevent JS leaks of the page close event.
|
|
* [1] https://developer.mozilla.org/docs/Web/Events/beforeunload
|
|
* [2] https://support.mozilla.org/questions/1043508 ***/
|
|
user_pref("dom.disable_beforeunload", true);
|
|
/* 2414: disable shaking the screen ***/
|
|
user_pref("dom.vibrator.enabled", false);
|
|
/* 2420: disable asm.js [FF22+] [SETUP-PERF]
|
|
* [1] http://asmjs.org/
|
|
* [2] https://www.mozilla.org/security/advisories/mfsa2015-29/
|
|
* [3] https://www.mozilla.org/security/advisories/mfsa2015-50/
|
|
* [4] https://www.mozilla.org/security/advisories/mfsa2017-01/#CVE-2017-5375
|
|
* [5] https://www.mozilla.org/security/advisories/mfsa2017-05/#CVE-2017-5400
|
|
* [6] https://rh0dev.github.io/blog/2017/the-return-of-the-jit/ ***/
|
|
user_pref("javascript.options.asmjs", false);
|
|
/* 2421: disable Ion and baseline JIT to help harden JS against exploits
|
|
* [SETUP-PERF] If false, causes the odd site issue and there is also a performance loss
|
|
* [1] https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-0817 ***/
|
|
// user_pref("javascript.options.ion", false);
|
|
// user_pref("javascript.options.baselinejit", false);
|
|
/* 2422: disable WebAssembly [FF52+] [SETUP-PERF]
|
|
* [1] https://developer.mozilla.org/docs/WebAssembly ***/
|
|
user_pref("javascript.options.wasm", false);
|
|
/* 2426: disable Intersection Observer API [FF53+]
|
|
* Almost a year to complete, three versions late to stable (as default false),
|
|
* number #1 cause of crashes in nightly numerous times, and is (primarily) an
|
|
* ad network API for "ad viewability checks" down to a pixel level
|
|
* [1] https://developer.mozilla.org/docs/Web/API/Intersection_Observer_API
|
|
* [2] https://w3c.github.io/IntersectionObserver/
|
|
* [3] https://bugzilla.mozilla.org/1243846 ***/
|
|
user_pref("dom.IntersectionObserver.enabled", false);
|
|
/* 2427: disable Shared Memory (Spectre mitigation)
|
|
* [1] https://github.com/tc39/ecmascript_sharedmem/blob/master/TUTORIAL.md
|
|
* [2] https://blog.mozilla.org/security/2018/01/03/mitigations-landing-new-class-timing-attack/ ***/
|
|
user_pref("javascript.options.shared_memory", false);
|
|
/* 2428: enforce DOMHighResTimeStamp API
|
|
* [WARNING] Required for normalization of timestamps and any timer resolution mitigations ***/
|
|
user_pref("dom.event.highrestimestamp.enabled", true); // [DEFAULT: true]
|
|
|
|
/*** [SECTION 2500]: HARDWARE FINGERPRINTING ***/
|
|
user_pref("_user.js.parrot", "2500 syntax error: the parrot's shuffled off 'is mortal coil!");
|
|
/* 2502: disable Battery Status API
|
|
* Initially a Linux issue (high precision readout) that was fixed.
|
|
* However, it is still another metric for fingerprinting, used to raise entropy.
|
|
* e.g. do you have a battery or not, current charging status, charge level, times remaining etc
|
|
* [NOTE] From FF52+ Battery Status API is only available in chrome/privileged code. see [1]
|
|
* [1] https://bugzilla.mozilla.org/1313580 ***/
|
|
// user_pref("dom.battery.enabled", false);
|
|
/* 2504: disable virtual reality devices
|
|
* Optional protection depending on your connected devices
|
|
* [1] https://developer.mozilla.org/docs/Web/API/WebVR_API ***/
|
|
// user_pref("dom.vr.enabled", false);
|
|
/* 2505: disable media device enumeration [FF29+]
|
|
* [NOTE] media.peerconnection.enabled should also be set to false (see 2001)
|
|
* [1] https://wiki.mozilla.org/Media/getUserMedia
|
|
* [2] https://developer.mozilla.org/docs/Web/API/MediaDevices/enumerateDevices ***/
|
|
user_pref("media.navigator.enabled", false);
|
|
/* 2508: disable hardware acceleration to reduce graphics fingerprinting
|
|
* [SETUP-PERF] Affects text rendering (fonts will look different), impacts video performance,
|
|
* and parts of Quantum that utilize the GPU will also be affected as they are rolled out
|
|
* [SETTING] General>Performance>Custom>Use hardware acceleration when available
|
|
* [1] https://wiki.mozilla.org/Platform/GFX/HardwareAcceleration ***/
|
|
// user_pref("gfx.direct2d.disabled", true); // [WINDOWS]
|
|
user_pref("layers.acceleration.disabled", true);
|
|
/* 2510: disable Web Audio API [FF51+]
|
|
* [1] https://bugzilla.mozilla.org/1288359 ***/
|
|
user_pref("dom.webaudio.enabled", false);
|
|
/* 2516: disable PointerEvents
|
|
* [1] https://developer.mozilla.org/en-US/docs/Web/API/PointerEvent ***/
|
|
user_pref("dom.w3c_pointer_events.enabled", false);
|
|
/* 2517: disable Media Capabilities API [FF63+]
|
|
* [SETUP-PERF] This *may* affect media performance if disabled, no one is sure
|
|
* [1] https://github.com/WICG/media-capabilities
|
|
* [2] https://wicg.github.io/media-capabilities/#security-privacy-considerations ***/
|
|
// user_pref("media.media-capabilities.enabled", false);
|
|
|
|
/*** [SECTION 2600]: MISCELLANEOUS ***/
|
|
user_pref("_user.js.parrot", "2600 syntax error: the parrot's run down the curtain!");
|
|
/* 2601: prevent accessibility services from accessing your browser [RESTART]
|
|
* [SETTING] Privacy & Security>Permissions>Prevent accessibility services from accessing your browser
|
|
* [1] https://support.mozilla.org/kb/accessibility-services ***/
|
|
user_pref("accessibility.force_disabled", 1);
|
|
/* 2602: disable sending additional analytics to web servers
|
|
* [1] https://developer.mozilla.org/docs/Web/API/Navigator/sendBeacon ***/
|
|
user_pref("beacon.enabled", false);
|
|
/* 2603: remove temp files opened with an external application
|
|
* [1] https://bugzilla.mozilla.org/302433 ***/
|
|
user_pref("browser.helperApps.deleteTempFileOnExit", true);
|
|
/* 2604: disable page thumbnail collection
|
|
* look in profile/thumbnails directory - you may want to clean that out ***/
|
|
user_pref("browser.pagethumbnails.capturing_disabled", true); // [HIDDEN PREF]
|
|
/* 2605: block web content in file processes [FF55+]
|
|
* [SETUP-WEB] You may want to disable this for corporate or developer environments
|
|
* [1] https://bugzilla.mozilla.org/1343184 ***/
|
|
user_pref("browser.tabs.remote.allowLinkedWebInFileUriProcess", false);
|
|
/* 2606: disable UITour backend so there is no chance that a remote page can use it ***/
|
|
user_pref("browser.uitour.enabled", false);
|
|
user_pref("browser.uitour.url", "");
|
|
/* 2607: disable various developer tools in browser context
|
|
* [SETTING] Devtools>Advanced Settings>Enable browser chrome and add-on debugging toolboxes
|
|
* [1] https://github.com/pyllyukko/user.js/issues/179#issuecomment-246468676 ***/
|
|
user_pref("devtools.chrome.enabled", false);
|
|
/* 2608: disable WebIDE to prevent remote debugging and ADB extension download
|
|
* [1] https://trac.torproject.org/projects/tor/ticket/16222 ***/
|
|
user_pref("devtools.debugger.remote-enabled", false);
|
|
user_pref("devtools.webide.enabled", false);
|
|
user_pref("devtools.webide.autoinstallADBExtension", false); // [FF64+]
|
|
/* 2609: disable MathML (Mathematical Markup Language) [FF51+]
|
|
* [TEST] http://browserspy.dk/mathml.php
|
|
* [1] https://bugzilla.mozilla.org/1173199 ***/
|
|
user_pref("mathml.disabled", true);
|
|
/* 2610: disable in-content SVG (Scalable Vector Graphics) [FF53+]
|
|
* [SETUP-WEB] Expect breakage incl. youtube player controls. Best left for a "hardened" profile.
|
|
* [1] https://bugzilla.mozilla.org/1216893 ***/
|
|
// user_pref("svg.disabled", true);
|
|
/* 2611: disable middle mouse click opening links from clipboard
|
|
* [1] https://trac.torproject.org/projects/tor/ticket/10089
|
|
* [2] http://kb.mozillazine.org/Middlemouse.contentLoadURL ***/
|
|
user_pref("middlemouse.contentLoadURL", false);
|
|
/* 2614: limit HTTP redirects (this does not control redirects with HTML meta tags or JS)
|
|
* [NOTE] A low setting of 5 or under will probably break some sites (e.g. gmail logins)
|
|
* To control HTML Meta tag and JS redirects, use an extension. Default is 20 ***/
|
|
user_pref("network.http.redirection-limit", 10);
|
|
/* 2615: disable websites overriding Firefox's keyboard shortcuts [FF58+]
|
|
* 0 (default) or 1=allow, 2=block
|
|
* [NOTE] In FF65 and under, causes issues with delete and backspace keys (see 1445942)
|
|
* [SETTING] to add site exceptions: Page Info>Permissions>Override Keyboard Shortcuts ***/
|
|
// user_pref("permissions.default.shortcuts", 2);
|
|
/* 2616: remove special permissions for certain mozilla domains [FF35+]
|
|
* [1] resource://app/defaults/permissions ***/
|
|
user_pref("permissions.manager.defaultsUrl", "");
|
|
/* 2617: remove webchannel whitelist ***/
|
|
user_pref("webchannel.allowObject.urlWhitelist", "");
|
|
/* 2618: disable exposure of system colors to CSS or canvas [FF44+]
|
|
* [NOTE] see second listed bug: may cause black on black for elements with undefined colors
|
|
* [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=232227,1330876 ***/
|
|
user_pref("ui.use_standins_for_native_colors", true); // [HIDDEN PREF]
|
|
/* 2619: enforce Punycode for Internationalized Domain Names to eliminate possible spoofing
|
|
* Firefox has *some* protections, but it is better to be safe than sorry. The downside: it will also
|
|
* display legitimate IDN's punycoded, which might be undesirable for users of non-latin alphabets
|
|
* [TEST] https://www.xn--80ak6aa92e.com/ (www.apple.com)
|
|
* [1] https://wiki.mozilla.org/IDN_Display_Algorithm
|
|
* [2] https://en.wikipedia.org/wiki/IDN_homograph_attack
|
|
* [3] CVE-2017-5383: https://www.mozilla.org/security/advisories/mfsa2017-02/
|
|
* [4] https://www.xudongz.com/blog/2017/idn-phishing/ ***/
|
|
user_pref("network.IDN_show_punycode", true);
|
|
/* 2620: enable Firefox's built-in PDF reader
|
|
* This setting controls if the option "Display in Firefox" in the above setting is available
|
|
* and by effect controls whether PDFs are handled in-browser or externally ("Ask" or "Open With")
|
|
* PROS: pdfjs is lightweight, open source, and as secure/vetted as any pdf reader out there (more than most)
|
|
* Exploits are rare (1 serious case in 4 yrs), treated seriously and patched quickly.
|
|
* It doesn't break "state separation" of browser content (by not sharing with OS, independent apps).
|
|
* It maintains disk avoidance and application data isolation. It's convenient. You can still save to disk.
|
|
* CONS: You may prefer a different pdf reader for security reasons
|
|
* CAVEAT: JS can still force a pdf to open in-browser by bundling its own code (rare)
|
|
* [SETTING] General>Applications>Portable Document Format (PDF) ***/
|
|
user_pref("pdfjs.disabled", false);
|
|
|
|
/** DOWNLOADS ***/
|
|
/* 2650: discourage downloading to desktop (0=desktop 1=downloads 2=last used)
|
|
* [SETTING] To set your default "downloads": General>Downloads>Save files to ***/
|
|
user_pref("browser.download.folderList", 2);
|
|
/* 2651: enforce user interaction for security by always asking the user where to download
|
|
* [SETTING] General>Downloads>Always ask you where to save files ***/
|
|
user_pref("browser.download.useDownloadDir", false);
|
|
/* 2652: disable adding downloads to the system's "recent documents" list ***/
|
|
user_pref("browser.download.manager.addToRecentDocs", false);
|
|
/* 2653: disable hiding mime types (Options>General>Applications) not associated with a plugin ***/
|
|
user_pref("browser.download.hide_plugins_without_extensions", false);
|
|
/* 2654: disable "open with" in download dialog [FF50+]
|
|
* This is very useful to enable when the browser is sandboxed (e.g. via AppArmor)
|
|
* in such a way that it is forbidden to run external applications.
|
|
* [SETUP-CHROME] This may interfere with some users' workflow or methods
|
|
* [1] https://bugzilla.mozilla.org/1281959 ***/
|
|
user_pref("browser.download.forbid_open_with", true);
|
|
|
|
/** EXTENSIONS ***/
|
|
/* 2660: lock down allowed extension directories
|
|
* [SETUP-CHROME] This will break extensions that do not use the default XPI directories
|
|
* [1] https://mike.kaply.com/2012/02/21/understanding-add-on-scopes/
|
|
* [1] archived: https://archive.is/DYjAM ***/
|
|
user_pref("extensions.enabledScopes", 1); // [HIDDEN PREF]
|
|
user_pref("extensions.autoDisableScopes", 15);
|
|
/* 2662: disable webextension restrictions on certain mozilla domains (also see 4503) [FF60+]
|
|
* [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1384330,1406795,1415644,1453988 ***/
|
|
// user_pref("extensions.webextensions.restrictedDomains", "");
|
|
/* 2663: enable warning when websites try to install add-ons
|
|
* [SETTING] Privacy & Security>Permissions>Warn you when websites try to install add-ons ***/
|
|
user_pref("xpinstall.whitelist.required", true); // [DEFAULT: true]
|
|
|
|
/** SECURITY ***/
|
|
/* 2680: enable CSP (Content Security Policy)
|
|
* [1] https://developer.mozilla.org/docs/Web/HTTP/CSP ***/
|
|
user_pref("security.csp.enable", true); // [DEFAULT: true]
|
|
/* 2682: enable CSP 1.1 experimental hash-source directive [FF29+]
|
|
* [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=855326,883975 ***/
|
|
user_pref("security.csp.experimentalEnabled", true);
|
|
/* 2683: block top level window data: URIs [FF56+]
|
|
* [1] https://bugzilla.mozilla.org/1331351
|
|
* [2] https://www.wordfence.com/blog/2017/01/gmail-phishing-data-uri/
|
|
* [3] https://www.fxsitecompat.com/en-CA/docs/2017/data-url-navigations-on-top-level-window-will-be-blocked/ ***/
|
|
user_pref("security.data_uri.block_toplevel_data_uri_navigations", true); // [DEFAULT: true]
|
|
/* 2684: enforce a security delay on some confirmation dialogs such as install, open/save
|
|
* [1] http://kb.mozillazine.org/Disable_extension_install_delay_-_Firefox
|
|
* [2] https://www.squarefree.com/2004/07/01/race-conditions-in-security-dialogs/ ***/
|
|
user_pref("security.dialog_enable_delay", 700);
|
|
|
|
/*** [SECTION 2700]: PERSISTENT STORAGE
|
|
Data SET by websites including
|
|
cookies : profile\cookies.sqlite
|
|
localStorage : profile\webappsstore.sqlite
|
|
indexedDB : profile\storage\default
|
|
appCache : profile\OfflineCache
|
|
serviceWorkers :
|
|
***/
|
|
user_pref("_user.js.parrot", "2700 syntax error: the parrot's joined the bleedin' choir invisible!");
|
|
/* 2701: disable 3rd-party cookies and site-data
|
|
* You can set exceptions under site permissions or use an extension
|
|
* 0=Accept cookies and site data, 1=Block third-party cookies, 2=Block all cookies,
|
|
* 3=Block cookies from unvisited sites, 4=Block third-party trackers (FF63+)
|
|
* [NOTE] value 4 is tied to the Tracking Protection lists so make sure you have 0424 + 0425 on default values!
|
|
* [NOTE] Blocking 3rd party controls 3rd party access to localStorage, IndexedDB, Cache API and Service Worker Cache.
|
|
* Blocking 1st party controls access to localStorage and IndexedDB (note: Service Workers can still use IndexedDB).
|
|
* [SETTING] Privacy & Security>Cookies and Site Data>Type blocked
|
|
* [1] https://www.fxsitecompat.com/en-CA/docs/2015/web-storage-indexeddb-cache-api-now-obey-third-party-cookies-preference/ ***/
|
|
user_pref("network.cookie.cookieBehavior", 1);
|
|
/* 2702: set third-party cookies (i.e ALL) (if enabled, see 2701) to session-only
|
|
and (FF58+) set third-party non-secure (i.e HTTP) cookies to session-only
|
|
[NOTE] .sessionOnly overrides .nonsecureSessionOnly except when .sessionOnly=false and
|
|
.nonsecureSessionOnly=true. This allows you to keep HTTPS cookies, but session-only HTTP ones
|
|
* [1] https://feeding.cloud.geek.nz/posts/tweaking-cookies-for-privacy-in-firefox/
|
|
* [2] http://kb.mozillazine.org/Network.cookie.thirdparty.sessionOnly ***/
|
|
user_pref("network.cookie.thirdparty.sessionOnly", true);
|
|
user_pref("network.cookie.thirdparty.nonsecureSessionOnly", true); // [FF58+]
|
|
/* 2703: set cookie lifetime policy
|
|
* 0=until they expire (default), 2=until you close Firefox
|
|
* [NOTE] 3=for n days : no longer supported in FF63+ (see 2704-deprecated)
|
|
* [SETTING] Privacy & Security>Cookies and Site Data>Keep until... ***/
|
|
// user_pref("network.cookie.lifetimePolicy", 0);
|
|
/* 2705: disable HTTP sites setting cookies with the "secure" directive [FF52+]
|
|
* [1] https://developer.mozilla.org/Firefox/Releases/52#HTTP ***/
|
|
user_pref("network.cookie.leave-secure-alone", true); // [DEFAULT: true]
|
|
/* 2706: enable support for same-site cookies [FF60+]
|
|
* [1] https://bugzilla.mozilla.org/795346
|
|
* [2] https://blog.mozilla.org/security/2018/04/24/same-site-cookies-in-firefox-60/
|
|
* [3] https://www.sjoerdlangkemper.nl/2016/04/14/preventing-csrf-with-samesite-cookie-attribute/ ***/
|
|
// user_pref("network.cookie.same-site.enabled", true); // [DEFAULT: true]
|
|
/* 2710: disable DOM (Document Object Model) Storage
|
|
* [WARNING] This will break a LOT of sites' functionality AND extensions!
|
|
* You are better off using an extension for more granular control ***/
|
|
// user_pref("dom.storage.enabled", false);
|
|
/* 2720: enforce IndexedDB (IDB) as enabled
|
|
* IDB is required for extensions and Firefox internals (even before FF63 in [1])
|
|
* To control *website* IDB data, control allowing cookies and service workers, or use
|
|
* Temporary Containers. To mitigate *website* IDB, FPI helps (4001), and/or sanitize
|
|
* on close (Offline Website Data, see 2800) or on-demand (Ctrl-Shift-Del), or automatically
|
|
* via an extension. Note that IDB currently cannot be sanitized by host.
|
|
* [1] https://blog.mozilla.org/addons/2018/08/03/new-backend-for-storage-local-api/ ***/
|
|
user_pref("dom.indexedDB.enabled", true); // [DEFAULT: true]
|
|
/* 2730: disable offline cache ***/
|
|
user_pref("browser.cache.offline.enable", false);
|
|
/* 2730b: disable offline cache on insecure sites [FF60+]
|
|
* [1] https://blog.mozilla.org/security/2018/02/12/restricting-appcache-secure-contexts/ ***/
|
|
user_pref("browser.cache.offline.insecure.enable", false); // [DEFAULT: false in FF62+]
|
|
/* 2731: enforce websites to ask to store data for offline use
|
|
* [1] https://support.mozilla.org/questions/1098540
|
|
* [2] https://bugzilla.mozilla.org/959985 ***/
|
|
user_pref("offline-apps.allow_by_default", false);
|
|
/* 2740: disable service workers cache and cache storage
|
|
* [1] https://w3c.github.io/ServiceWorker/#privacy ***/
|
|
user_pref("dom.caches.enabled", false);
|
|
/* 2750: disable Storage API [FF51+]
|
|
* The API gives sites the ability to find out how much space they can use, how much
|
|
* they are already using, and even control whether or not they need to be alerted
|
|
* before the user agent disposes of site data in order to make room for other things.
|
|
* [1] https://developer.mozilla.org/docs/Web/API/StorageManager
|
|
* [2] https://developer.mozilla.org/docs/Web/API/Storage_API
|
|
* [3] https://blog.mozilla.org/l10n/2017/03/07/firefox-l10n-report-aurora-54/ ***/
|
|
// user_pref("dom.storageManager.enabled", false);
|
|
|
|
/*** [SECTION 2800]: SHUTDOWN [SETUP-CHROME]
|
|
You should set the values to what suits you best.
|
|
- "Offline Website Data" includes appCache (2730), localStorage (2710),
|
|
Service Worker cache (2740), and QuotaManager (IndexedDB (2720), asm-cache)
|
|
- In both 2803 + 2804, the 'download' and 'history' prefs are combined in the
|
|
Firefox interface as "Browsing & Download History" and their values will be synced
|
|
***/
|
|
user_pref("_user.js.parrot", "2800 syntax error: the parrot's bleedin' demised!");
|
|
/* 2802: enable Firefox to clear history items on shutdown
|
|
* [SETTING] Privacy & Security>History>Custom Settings>Clear history when Firefox closes ***/
|
|
user_pref("privacy.sanitize.sanitizeOnShutdown", true);
|
|
/* 2803: set what history items to clear on shutdown
|
|
* [NOTE] If 'history' is true, downloads will also be cleared regardless of the value
|
|
* but if 'history' is false, downloads can still be cleared independently
|
|
* However, this may not always be the case. The interface combines and syncs these
|
|
* prefs when set from there, and the sanitize code may change at any time
|
|
* [SETTING] Privacy & Security>History>Custom Settings>Clear history when Firefox closes>Settings ***/
|
|
user_pref("privacy.clearOnShutdown.cache", true);
|
|
user_pref("privacy.clearOnShutdown.cookies", true);
|
|
user_pref("privacy.clearOnShutdown.downloads", true); // see note above
|
|
user_pref("privacy.clearOnShutdown.formdata", true); // Form & Search History
|
|
user_pref("privacy.clearOnShutdown.history", true); // Browsing & Download History
|
|
user_pref("privacy.clearOnShutdown.offlineApps", true); // Offline Website Data
|
|
user_pref("privacy.clearOnShutdown.sessions", true); // Active Logins
|
|
user_pref("privacy.clearOnShutdown.siteSettings", false); // Site Preferences
|
|
/* 2804: reset default history items to clear with Ctrl-Shift-Del (to match 2803)
|
|
* This dialog can also be accessed from the menu History>Clear Recent History
|
|
* Firefox remembers your last choices. This will reset them when you start Firefox.
|
|
* [NOTE] Regardless of what you set privacy.cpd.downloads to, as soon as the dialog
|
|
* for "Clear Recent History" is opened, it is synced to the same as 'history' ***/
|
|
user_pref("privacy.cpd.cache", true);
|
|
user_pref("privacy.cpd.cookies", true);
|
|
// user_pref("privacy.cpd.downloads", true); // not used, see note above
|
|
user_pref("privacy.cpd.formdata", true); // Form & Search History
|
|
user_pref("privacy.cpd.history", true); // Browsing & Download History
|
|
user_pref("privacy.cpd.offlineApps", true); // Offline Website Data
|
|
user_pref("privacy.cpd.passwords", false); // this is not listed
|
|
user_pref("privacy.cpd.sessions", true); // Active Logins
|
|
user_pref("privacy.cpd.siteSettings", false); // Site Preferences
|
|
/* 2805: privacy.*.openWindows (clear session restore data) [FF34+]
|
|
* [NOTE] There is a years-old bug that these cause two windows when Firefox restarts.
|
|
* You do not need these anyway if session restore is cleared with history (see 2803) ***/
|
|
// user_pref("privacy.clearOnShutdown.openWindows", true);
|
|
// user_pref("privacy.cpd.openWindows", true);
|
|
/* 2806: reset default 'Time range to clear' for 'Clear Recent History' (see 2804)
|
|
* Firefox remembers your last choice. This will reset the value when you start Firefox.
|
|
* 0=everything, 1=last hour, 2=last two hours, 3=last four hours,
|
|
* 4=today, 5=last five minutes, 6=last twenty-four hours
|
|
* [NOTE] The values 5 + 6 are not listed in the dropdown, which will display a
|
|
* blank value if they are used, but they do work as advertised ***/
|
|
user_pref("privacy.sanitize.timeSpan", 0);
|
|
|
|
/*** [SECTION 4000]: FPI (FIRST PARTY ISOLATION)
|
|
** 1278037 - isolate indexedDB (FF51+)
|
|
** 1277803 - isolate favicons (FF52+)
|
|
** 1264562 - isolate OCSP cache (FF52+)
|
|
** 1268726 - isolate Shared Workers (FF52+)
|
|
** 1316283 - isolate SSL session cache (FF52+)
|
|
** 1317927 - isolate media cache (FF53+)
|
|
** 1323644 - isolate HSTS and HPKP (FF54+)
|
|
** 1334690 - isolate HTTP Alternative Services (FF54+)
|
|
** 1334693 - isolate SPDY/HTTP2 (FF55+)
|
|
** 1337893 - isolate DNS cache (FF55+)
|
|
** 1344170 - isolate blob: URI (FF55+)
|
|
** 1300671 - isolate data:, about: URLs (FF55+)
|
|
** 1473247 - isolate IP addresses (FF63+)
|
|
** 1492607 - isolate postMessage with targetOrigin "*" (requires 4002) (FF65+)
|
|
***/
|
|
user_pref("_user.js.parrot", "4000 syntax error: the parrot's pegged out");
|
|
/* 4001: enable First Party Isolation [FF51+]
|
|
* [SETUP-WEB] May break cross-domain logins and site functionality until perfected
|
|
* [1] https://bugzilla.mozilla.org/1260931 ***/
|
|
user_pref("privacy.firstparty.isolate", true);
|
|
/* 4002: enforce FPI restriction for window.opener [FF54+]
|
|
* [NOTE] Setting this to false may reduce the breakage in 4001
|
|
* FF65+ blocks postMessage with targetOrigin "*" if originAttributes don't match. But
|
|
* to reduce breakage it ignores the 1st-party domain (FPD) originAttribute. (see [2],[3])
|
|
* The 2nd pref removes that limitation and will only allow communication if FPDs also match.
|
|
* [1] https://bugzilla.mozilla.org/1319773#c22
|
|
* [2] https://bugzilla.mozilla.org/1492607
|
|
* [3] https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage ***/
|
|
user_pref("privacy.firstparty.isolate.restrict_opener_access", true); // [DEFAULT: true]
|
|
// user_pref("privacy.firstparty.isolate.block_post_message", true); // [HIDDEN PREF]
|
|
|
|
/*** [SECTION 4500]: RFP (RESIST FINGERPRINTING)
|
|
This master switch will be used for a wide range of items, many of which will
|
|
**override** existing prefs from FF55+, often providing a **better** solution
|
|
|
|
IMPORTANT: As existing prefs become redundant, and some of them WILL interfere
|
|
with how RFP works, they will be moved to section 4600 and made inactive
|
|
|
|
** 418986 - limit window.screen & CSS media queries leaking identifiable info (FF41+)
|
|
[POC] http://ip-check.info/?lang=en (screen, usable screen, and browser window will match)
|
|
[NOTE] Does not cover everything yet - https://bugzilla.mozilla.org/1216800
|
|
[NOTE] This will probably make your values pretty unique until you resize or snap the
|
|
inner window width + height into standard/common resolutions (such as 1366x768)
|
|
To set a size, open a XUL (chrome) page (such as about:config) which is at 100% zoom, hit
|
|
Shift+F4 to open the scratchpad, type window.resizeTo(1366,768), hit Ctrl+R to run. Test
|
|
your window size, do some math, resize to allow for all the non inner window elements
|
|
[TEST] http://browserspy.dk/screen.php
|
|
** 1281949 - spoof screen orientation (FF50+)
|
|
** 1281963 - hide the contents of navigator.plugins and navigator.mimeTypes (FF50+)
|
|
FF53: Fixes GetSupportedNames in nsMimeTypeArray and nsPluginArray (1324044)
|
|
** 1330890 - spoof timezone as UTC 0 (FF55+)
|
|
FF58: Date.toLocaleFormat deprecated (818634)
|
|
FF60: Date.toLocaleDateString and Intl.DateTimeFormat fixed (1409973)
|
|
** 1360039 - spoof navigator.hardwareConcurrency as 2 (see 4601) (FF55+)
|
|
This spoof *shouldn't* affect core chrome/Firefox performance
|
|
** 1217238 - reduce precision of time exposed by javascript (FF55+)
|
|
** 1369303 - spoof/disable performance API (see 2410-deprecated, 4602, 4603) (FF56+)
|
|
** 1333651 & 1383495 & 1396468 - spoof Navigator API (see section 4700) (FF56+)
|
|
FF56: The version number will be rounded down to the nearest multiple of 10
|
|
FF57: The version number will match current ESR (1393283, 1418672, 1418162)
|
|
FF59: The OS will be reported as Windows, OSX, Android, or Linux (to reduce breakage) (1404608)
|
|
FF66: The OS in HTTP Headers will be reduced to Windows or Android (1509829)
|
|
** 1369319 - disable device sensor API (see 4604) (FF56+)
|
|
** 1369357 - disable site specific zoom (see 4605) (FF56+)
|
|
** 1337161 - hide gamepads from content (see 4606) (FF56+)
|
|
** 1372072 - spoof network information API as "unknown" (see 4607) (FF56+)
|
|
** 1333641 - reduce fingerprinting in WebSpeech API (see 4608) (FF56+)
|
|
** 1372069 & 1403813 & 1441295 - block geolocation requests (same as denying a site permission) (see 0201, 0201b) (FF56-62)
|
|
** 1369309 - spoof media statistics (see 4610) (FF57+)
|
|
** 1382499 - reduce screen co-ordinate fingerprinting in Touch API (see 4611) (FF57+)
|
|
** 1217290 & 1409677 - enable fingerprinting resistance for WebGL (see 2010-12) (FF57+)
|
|
** 1382545 - reduce fingerprinting in Animation API (FF57+)
|
|
** 1354633 - limit MediaError.message to a whitelist (FF57+)
|
|
** 1382533 - enable fingerprinting resistance for Presentation API (FF57+)
|
|
This blocks exposure of local IP Addresses via mDNS (Multicast DNS)
|
|
** 967895 - enable site permission prompt before allowing canvas data extraction (FF58+)
|
|
FF59: Added to site permissions panel (1413780) Only prompt when triggered by user input (1376865)
|
|
** 1372073 - spoof/block fingerprinting in MediaDevices API (see 4612) (FF59+)
|
|
** 1039069 - warn when language prefs are set to non en-US (see 0207, 0208) (FF59+)
|
|
** 1222285 & 1433592 - spoof keyboard events and suppress keyboard modifier events (FF59+)
|
|
Spoofing mimics the content language of the document. Currently it only supports en-US.
|
|
Modifier events suppressed are SHIFT and both ALT keys. Chrome is not affected.
|
|
FF60: Fix keydown/keyup events (1438795)
|
|
** 1337157 - disable WebGL debug renderer info (see 4613) (FF60+)
|
|
** 1459089 - disable OS locale in HTTP Accept-Language headers (ANDROID) (FF62+)
|
|
** 1363508 - spoof/suppress Pointer Events (see 2516) (FF64+)
|
|
FF65: pointerEvent.pointerid (1492766)
|
|
***/
|
|
user_pref("_user.js.parrot", "4500 syntax error: the parrot's popped 'is clogs");
|
|
/* 4501: enable privacy.resistFingerprinting [FF41+]
|
|
* [SETUP-WEB] RFP is not ready for the masses, so expect some website breakage
|
|
* [1] https://bugzilla.mozilla.org/418986 ***/
|
|
user_pref("privacy.resistFingerprinting", true);
|
|
/* 4502: set new window sizes to round to hundreds [FF55+] [SETUP-CHROME]
|
|
* Width will round down to multiples of 200s and height to 100s, to fit your screen.
|
|
* The override values are a starting point to round from if you want some control
|
|
* [1] https://bugzilla.mozilla.org/1330882
|
|
* [2] https://hardware.metrics.mozilla.com/ ***/
|
|
// user_pref("privacy.window.maxInnerWidth", 1600); // [HIDDEN PREF]
|
|
// user_pref("privacy.window.maxInnerHeight", 900); // [HIDDEN PREF]
|
|
/* 4503: disable mozAddonManager Web API [FF57+]
|
|
* [NOTE] As a side-effect in FF57-59 this allowed extensions to work on AMO. In FF60+ you also need
|
|
* to sanitize or clear extensions.webextensions.restrictedDomains (see 2662) to keep that side-effect
|
|
* [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1384330,1406795,1415644,1453988 ***/
|
|
user_pref("privacy.resistFingerprinting.block_mozAddonManager", true); // [HIDDEN PREF]
|
|
/* 4504: disable showing about:blank as soon as possible during startup [FF60+]
|
|
* When default true (FF62+) this no longer masks the RFP resizing activity
|
|
* [1] https://bugzilla.mozilla.org/1448423 ***/
|
|
user_pref("browser.startup.blankWindow", false);
|
|
|
|
/*** [SECTION 4600]: RFP ALTERNATIVES
|
|
* IF you DO use RFP (see 4500) then you DO NOT need these redundant prefs. In fact,
|
|
some even cause RFP to not behave as you would expect and alter your fingerprint.
|
|
Make sure they are RESET in about:config as per your Firefox version
|
|
* IF you DO NOT use RFP or are on ESR... then turn on each ESR section below
|
|
***/
|
|
user_pref("_user.js.parrot", "4600 syntax error: the parrot's crossed the Jordan");
|
|
/* [SETUP-non-RFP] Non-RFP users replace the * with a slash on this line to enable these
|
|
// FF55+
|
|
// 4601: [2514] spoof (or limit?) number of CPU cores [FF48+]
|
|
// [NOTE] *may* affect core chrome/Firefox performance, will affect content.
|
|
// [1] https://bugzilla.mozilla.org/1008453
|
|
// [2] https://trac.torproject.org/projects/tor/ticket/21675
|
|
// [3] https://trac.torproject.org/projects/tor/ticket/22127
|
|
// [4] https://html.spec.whatwg.org/multipage/workers.html#navigator.hardwareconcurrency
|
|
// user_pref("dom.maxHardwareConcurrency", 2);
|
|
// * * * /
|
|
// FF56+
|
|
// 4602: [2411] disable resource/navigation timing
|
|
user_pref("dom.enable_resource_timing", false);
|
|
// 4603: [2412] disable timing attacks
|
|
// [1] https://wiki.mozilla.org/Security/Reviews/Firefox/NavigationTimingAPI
|
|
user_pref("dom.enable_performance", false);
|
|
// 4604: [2512] disable device sensor API
|
|
// Optional protection depending on your device
|
|
// [1] https://trac.torproject.org/projects/tor/ticket/15758
|
|
// [2] https://blog.lukaszolejnik.com/stealing-sensitive-browser-data-with-the-w3c-ambient-light-sensor-api/
|
|
// [3] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1357733,1292751
|
|
// user_pref("device.sensors.enabled", false);
|
|
// 4605: [2515] disable site specific zoom
|
|
// Zoom levels affect screen res and are highly fingerprintable. This does not stop you using
|
|
// zoom, it will just not use/remember any site specific settings. Zoom levels on new tabs
|
|
// and new windows are reset to default and only the current tab retains the current zoom
|
|
user_pref("browser.zoom.siteSpecific", false);
|
|
// 4606: [2501] disable gamepad API - USB device ID enumeration
|
|
// Optional protection depending on your connected devices
|
|
// [1] https://trac.torproject.org/projects/tor/ticket/13023
|
|
// user_pref("dom.gamepad.enabled", false);
|
|
// 4607: [2503] disable giving away network info [FF31+]
|
|
// e.g. bluetooth, cellular, ethernet, wifi, wimax, other, mixed, unknown, none
|
|
// [1] https://developer.mozilla.org/docs/Web/API/Network_Information_API
|
|
// [2] https://wicg.github.io/netinfo/
|
|
// [3] https://bugzilla.mozilla.org/960426
|
|
user_pref("dom.netinfo.enabled", false);
|
|
// 4608: [2021] disable the SpeechSynthesis (Text-to-Speech) part of the Web Speech API
|
|
// [1] https://developer.mozilla.org/docs/Web/API/Web_Speech_API
|
|
// [2] https://developer.mozilla.org/docs/Web/API/SpeechSynthesis
|
|
// [3] https://wiki.mozilla.org/HTML5_Speech_API
|
|
user_pref("media.webspeech.synth.enabled", false);
|
|
// * * * /
|
|
// FF57+
|
|
// 4610: [2506] disable video statistics - JS performance fingerprinting [FF25+]
|
|
// [1] https://trac.torproject.org/projects/tor/ticket/15757
|
|
// [2] https://bugzilla.mozilla.org/654550
|
|
user_pref("media.video_stats.enabled", false);
|
|
// 4611: [2509] disable touch events
|
|
// fingerprinting attack vector - leaks screen res & actual screen coordinates
|
|
// 0=disabled, 1=enabled, 2=autodetect
|
|
// Optional protection depending on your device
|
|
// [1] https://developer.mozilla.org/docs/Web/API/Touch_events
|
|
// [2] https://trac.torproject.org/projects/tor/ticket/10286
|
|
// user_pref("dom.w3c_touch_events.enabled", 0);
|
|
// * * * /
|
|
// FF59+
|
|
// 4612: [2511] disable MediaDevices change detection [FF51+]
|
|
// [1] https://developer.mozilla.org/docs/Web/Events/devicechange
|
|
// [2] https://developer.mozilla.org/docs/Web/API/MediaDevices/ondevicechange
|
|
user_pref("media.ondevicechange.enabled", false);
|
|
// * * * /
|
|
// FF60+
|
|
// 4613: [2011] disable WebGL debug info being available to websites
|
|
// [1] https://bugzilla.mozilla.org/1171228
|
|
// [2] https://developer.mozilla.org/docs/Web/API/WEBGL_debug_renderer_info
|
|
user_pref("webgl.enable-debug-renderer-info", false);
|
|
// * * * /
|
|
// ***/
|
|
|
|
/*** [SECTION 4700]: RFP ALTERNATIVES (NAVIGATOR / USER AGENT (UA) SPOOFING)
|
|
This is FYI ONLY. These prefs are INSUFFICIENT(a) on their own, you need
|
|
to use RFP (4500) or an extension, in which case they become POINTLESS.
|
|
(a) Many of the components that make up your UA can be derived by other means.
|
|
And when those values differ, you provide more bits and raise entropy.
|
|
Examples of leaks include navigator objects, date locale/formats, iframes,
|
|
headers, tcp/ip attributes, feature detection, and **many** more.
|
|
ALL values below intentionally left blank - use RFP, or get a vetted, tested
|
|
extension and mimic RFP values to *lower* entropy, or randomize to *raise* it
|
|
***/
|
|
user_pref("_user.js.parrot", "4700 syntax error: the parrot's taken 'is last bow");
|
|
/* 4701: navigator.userAgent ***/
|
|
// user_pref("general.useragent.override", ""); // [HIDDEN PREF]
|
|
/* 4702: navigator.buildID
|
|
* Revealed build time down to the second. In FF64+ it now returns a fixed timestamp
|
|
* [1] https://bugzilla.mozilla.org/583181
|
|
* [2] https://www.fxsitecompat.com/en-CA/docs/2018/navigator-buildid-now-returns-a-fixed-timestamp/ ***/
|
|
// user_pref("general.buildID.override", ""); // [HIDDEN PREF]
|
|
/* 4703: navigator.appName ***/
|
|
// user_pref("general.appname.override", ""); // [HIDDEN PREF]
|
|
/* 4704: navigator.appVersion ***/
|
|
// user_pref("general.appversion.override", ""); // [HIDDEN PREF]
|
|
/* 4705: navigator.platform ***/
|
|
// user_pref("general.platform.override", ""); // [HIDDEN PREF]
|
|
/* 4706: navigator.oscpu ***/
|
|
// user_pref("general.oscpu.override", ""); // [HIDDEN PREF]
|
|
|
|
/*** [SECTION 5000]: PERSONAL
|
|
Non-project related but useful. If any of these interest you, add them to your overrides ***/
|
|
user_pref("_user.js.parrot", "5000 syntax error: this is an ex-parrot!");
|
|
/* WELCOME & WHAT's NEW NOTICES ***/
|
|
// user_pref("browser.startup.homepage_override.mstone", "ignore"); // master switch
|
|
// user_pref("startup.homepage_welcome_url", "");
|
|
// user_pref("startup.homepage_welcome_url.additional", "");
|
|
// user_pref("startup.homepage_override_url", ""); // What's New page after updates
|
|
/* WARNINGS ***/
|
|
// user_pref("browser.tabs.warnOnClose", false);
|
|
// user_pref("browser.tabs.warnOnCloseOtherTabs", false);
|
|
// user_pref("browser.tabs.warnOnOpen", false);
|
|
// user_pref("full-screen-api.warning.delay", 0);
|
|
// user_pref("full-screen-api.warning.timeout", 0);
|
|
// user_pref("general.warnOnAboutConfig", false);
|
|
/* APPEARANCE ***/
|
|
// user_pref("browser.download.autohideButton", false); // [FF57+]
|
|
// user_pref("toolkit.cosmeticAnimations.enabled", false); // [FF55+]
|
|
/* CONTENT BEHAVIOR ***/
|
|
// user_pref("accessibility.typeaheadfind", true); // enable "Find As You Type"
|
|
// user_pref("clipboard.autocopy", false); // disable autocopy default [LINUX]
|
|
// user_pref("layout.spellcheckDefault", 2); // 0=none, 1-multi-line, 2=multi-line & single-line
|
|
/* UX BEHAVIOR ***/
|
|
// user_pref("browser.backspace_action", 2); // 0=previous page, 1=scroll up, 2=do nothing
|
|
// user_pref("browser.tabs.closeWindowWithLastTab", false);
|
|
// user_pref("browser.tabs.loadBookmarksInTabs", true); // open bookmarks in a new tab [FF57+]
|
|
// user_pref("browser.urlbar.decodeURLsOnCopy", true); // see bugzilla 1320061 [FF53+]
|
|
// user_pref("general.autoScroll", false); // middle-click enabling auto-scrolling [WINDOWS] [MAC]
|
|
// user_pref("ui.key.menuAccessKey", 0); // disable alt key toggling the menu bar [RESTART]
|
|
/* OTHER ***/
|
|
// user_pref("browser.bookmarks.max_backups", 2);
|
|
// user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr", false); // disable CFR [FF64+]
|
|
// [SETTING] General>Browsing>Recommend extensions as you browse
|
|
// [1] https://support.mozilla.org/en-US/kb/extension-recommendations
|
|
// user_pref("identity.fxaccounts.enabled", false); // disable and hide Firefox Accounts and Sync [FF60+] [RESTART]
|
|
// user_pref("network.manage-offline-status", false); // see bugzilla 620472
|
|
// user_pref("reader.parse-on-load.enabled", false); // "Reader View"
|
|
// user_pref("xpinstall.signatures.required", false); // enforced extension signing (Nightly/ESR)
|
|
|
|
/*** [SECTION 9999]: DEPRECATED / REMOVED / LEGACY / RENAMED
|
|
Documentation denoted as [-]. Numbers may be re-used. See [1] for a link-clickable,
|
|
viewer-friendly version of the deprecated bugzilla tickets. The original state of each pref
|
|
has been preserved, or changed to match the current setup, but you are advised to review them.
|
|
[NOTE] Up to FF53, to enable a section change /* FFxx to // FFxx
|
|
For FF53 on, we have bundled releases to cater for ESR. Change /* to // on the first line
|
|
[1] https://github.com/ghacksuserjs/ghacks-user.js/issues/123
|
|
***/
|
|
user_pref("_user.js.parrot", "9999 syntax error: the parrot's deprecated!");
|
|
/* FF42 and older
|
|
// 2604: (25+) disable page thumbnails - replaced by browser.pagethumbnails.capturing_disabled
|
|
// [-] https://bugzilla.mozilla.org/897811
|
|
user_pref("pageThumbs.enabled", false);
|
|
// 2503: (31+) disable network API - replaced by dom.netinfo.enabled
|
|
// [-] https://bugzilla.mozilla.org/960426
|
|
user_pref("dom.network.enabled", false);
|
|
// 2600's: (35+) disable WebSockets
|
|
// [-] https://bugzilla.mozilla.org/1091016
|
|
user_pref("network.websocket.enabled", false);
|
|
// 1610: (36+) set DNT "value" to "not be tracked" [FF21+]
|
|
// [1] http://kb.mozillazine.org/Privacy.donottrackheader.value
|
|
// [-] https://bugzilla.mozilla.org/1042135#c101
|
|
// user_pref("privacy.donottrackheader.value", 1);
|
|
// 2023: (37+) disable camera autofocus callback
|
|
// The API will be superseded by the WebRTC Capture and Stream API
|
|
// [1] https://developer.mozilla.org/docs/Archive/B2G_OS/API/CameraControl
|
|
// [-] https://bugzilla.mozilla.org/1107683
|
|
user_pref("camera.control.autofocus_moving_callback.enabled", false);
|
|
// 0415: (41+) disable reporting URLs (safe browsing) - removed or replaced by various
|
|
// [-] https://bugzilla.mozilla.org/1109475
|
|
user_pref("browser.safebrowsing.reportErrorURL", ""); // browser.safebrowsing.reportPhishMistakeURL
|
|
user_pref("browser.safebrowsing.reportGenericURL", ""); // removed
|
|
user_pref("browser.safebrowsing.reportMalwareErrorURL", ""); // browser.safebrowsing.reportMalwareMistakeURL
|
|
user_pref("browser.safebrowsing.reportMalwareURL", ""); // removed
|
|
user_pref("browser.safebrowsing.reportURL", ""); // removed
|
|
// 0702: (41+) disable HTTP2 (draft)
|
|
// [-] https://bugzilla.mozilla.org/1132357
|
|
user_pref("network.http.spdy.enabled.http2draft", false);
|
|
// 1804: (41+) disable plugin enumeration
|
|
// [-] https://bugzilla.mozilla.org/1169945
|
|
user_pref("plugins.enumerable_names", "");
|
|
// 2803: (42+) clear passwords on shutdown
|
|
// [-] https://bugzilla.mozilla.org/1102184
|
|
// user_pref("privacy.clearOnShutdown.passwords", false);
|
|
// 5002: (42+) disable warning when a domain requests full screen
|
|
// replaced by setting full-screen-api.warning.timeout to zero
|
|
// [-] https://bugzilla.mozilla.org/1160017
|
|
// user_pref("full-screen-api.approval-required", false);
|
|
// ***/
|
|
/* FF43
|
|
// 0410's: disable safebrowsing urls & updates - replaced by various
|
|
// [-] https://bugzilla.mozilla.org/1107372
|
|
// user_pref("browser.safebrowsing.gethashURL", ""); // browser.safebrowsing.provider.google.gethashURL
|
|
// user_pref("browser.safebrowsing.updateURL", ""); // browser.safebrowsing.provider.google.updateURL
|
|
user_pref("browser.safebrowsing.malware.reportURL", ""); // browser.safebrowsing.provider.google.reportURL
|
|
// 0420's: disable tracking protection - replaced by various
|
|
// [-] https://bugzilla.mozilla.org/1107372
|
|
// user_pref("browser.trackingprotection.gethashURL", ""); // browser.safebrowsing.provider.mozilla.gethashURL
|
|
// user_pref("browser.trackingprotection.updateURL", ""); // browser.safebrowsing.provider.mozilla.updateURL
|
|
// 1803: remove plugin finder service
|
|
// [1] http://kb.mozillazine.org/Pfs.datasource.url
|
|
// [-] https://bugzilla.mozilla.org/1202193
|
|
user_pref("pfs.datasource.url", "");
|
|
// 5003: disable new search panel UI
|
|
// [-] https://bugzilla.mozilla.org/1119250
|
|
// user_pref("browser.search.showOneOffButtons", false);
|
|
// ***/
|
|
/* FF44
|
|
// 0414: disable safebrowsing's real-time binary checking (google) [FF43+]
|
|
// [-] https://bugzilla.mozilla.org/1237103
|
|
user_pref("browser.safebrowsing.provider.google.appRepURL", ""); // browser.safebrowsing.appRepURL
|
|
// 1200's: block rc4 whitelist
|
|
// [-] https://bugzilla.mozilla.org/1215796
|
|
user_pref("security.tls.insecure_fallback_hosts.use_static_list", false);
|
|
// 2300's: disable SharedWorkers
|
|
// [1] https://trac.torproject.org/projects/tor/ticket/15562
|
|
// [-] https://bugzilla.mozilla.org/1207635
|
|
user_pref("dom.workers.sharedWorkers.enabled", false);
|
|
// 2403: disable scripts changing images
|
|
// [TEST] https://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_img_src2
|
|
// [-] https://bugzilla.mozilla.org/773429
|
|
// user_pref("dom.disable_image_src_set", true);
|
|
// ***/
|
|
/* FF45
|
|
// 1021b: disable deferred level of storing extra session data 0=all 1=http-only 2=none
|
|
// extra session data contains contents of forms, scrollbar positions, cookies and POST data
|
|
// [-] https://bugzilla.mozilla.org/1235379
|
|
user_pref("browser.sessionstore.privacy_level_deferred", 2);
|
|
// ***/
|
|
/* FF46
|
|
// 0333: disable health report
|
|
// [-] https://bugzilla.mozilla.org/1234526
|
|
user_pref("datareporting.healthreport.service.enabled", false); // [HIDDEN PREF]
|
|
user_pref("datareporting.healthreport.documentServerURI", ""); // [HIDDEN PREF]
|
|
// 0334b: disable FHR (Firefox Health Report) v2 data being sent to Mozilla servers
|
|
// [-] https://bugzilla.mozilla.org/1234522
|
|
user_pref("datareporting.policy.dataSubmissionEnabled.v2", false);
|
|
// 0414: disable safebrowsing pref - replaced by browser.safebrowsing.downloads.remote.url
|
|
// [-] https://bugzilla.mozilla.org/1239587
|
|
user_pref("browser.safebrowsing.appRepURL", ""); // Google application reputation check
|
|
// 0420: disable polaris (part of Tracking Protection, never used in stable)
|
|
// [-] https://bugzilla.mozilla.org/1235565
|
|
// user_pref("browser.polaris.enabled", false);
|
|
// 0510: disable "Pocket" [FF39+] - replaced by extensions.pocket.*
|
|
// [-] https://bugzilla.mozilla.org/1215694
|
|
user_pref("browser.pocket.enabled", false);
|
|
user_pref("browser.pocket.api", "");
|
|
user_pref("browser.pocket.site", "");
|
|
user_pref("browser.pocket.oAuthConsumerKey", "");
|
|
// ***/
|
|
/* FF47
|
|
// 0330b: set unifiedIsOptIn to make sure telemetry respects OptIn choice and that telemetry
|
|
// is enabled ONLY for people that opted into it, even if unified Telemetry is enabled
|
|
// [-] https://bugzilla.mozilla.org/1236580
|
|
user_pref("toolkit.telemetry.unifiedIsOptIn", true); // [HIDDEN PREF]
|
|
// 0333b: disable about:healthreport page UNIFIED
|
|
// [-] https://bugzilla.mozilla.org/1236580
|
|
user_pref("datareporting.healthreport.about.reportUrlUnified", "data:text/plain,");
|
|
// 0807: disable history manipulation
|
|
// [1] https://developer.mozilla.org/docs/Web/API/History_API
|
|
// [-] https://bugzilla.mozilla.org/1249542
|
|
user_pref("browser.history.allowPopState", false);
|
|
user_pref("browser.history.allowPushState", false);
|
|
user_pref("browser.history.allowReplaceState", false);
|
|
// ***/
|
|
/* FF48
|
|
// 0806: disable 'unified complete': 'Search with [default search engine]'
|
|
// [-] http://techdows.com/2016/05/firefox-unified-complete-aboutconfig-preference-removed.html
|
|
// [-] https://bugzilla.mozilla.org/1181078
|
|
user_pref("browser.urlbar.unifiedcomplete", false);
|
|
// ***/
|
|
/* FF49
|
|
// 0372: disable "Hello"
|
|
// [1] https://www.mozilla.org/privacy/archive/hello/2016-03/
|
|
// [2] https://security.stackexchange.com/questions/94284/how-secure-is-firefox-hello
|
|
// [-] https://bugzilla.mozilla.org/1287827
|
|
user_pref("loop.enabled", false);
|
|
user_pref("loop.server", "");
|
|
user_pref("loop.feedback.formURL", "");
|
|
user_pref("loop.feedback.manualFormURL", "");
|
|
user_pref("loop.facebook.appId", "");
|
|
user_pref("loop.facebook.enabled", false);
|
|
user_pref("loop.facebook.fallbackUrl", "");
|
|
user_pref("loop.facebook.shareUrl", "");
|
|
user_pref("loop.logDomains", false);
|
|
// 2201: disable new window scrollbars being hidden
|
|
// [-] https://bugzilla.mozilla.org/1257887
|
|
user_pref("dom.disable_window_open_feature.scrollbars", true);
|
|
// 2303: disable push notification (UDP wake-up)
|
|
// [-] https://bugzilla.mozilla.org/1265914
|
|
user_pref("dom.push.udp.wakeupEnabled", false);
|
|
// ***/
|
|
/* FF50
|
|
// 0101: disable Windows10 intro on startup [WINDOWS]
|
|
// [-] https://bugzilla.mozilla.org/1274633
|
|
user_pref("browser.usedOnWindows10.introURL", "");
|
|
// 0308: disable plugin update notifications
|
|
// [-] https://bugzilla.mozilla.org/1277905
|
|
user_pref("plugins.update.notifyUser", false);
|
|
// 0410: disable "Block dangerous and deceptive content" - replaced by browser.safebrowsing.phishing.enabled
|
|
// [-] https://bugzilla.mozilla.org/1025965
|
|
// user_pref("browser.safebrowsing.enabled", false);
|
|
// 1266: disable rc4 ciphers
|
|
// [1] https://trac.torproject.org/projects/tor/ticket/17369
|
|
// [-] https://bugzilla.mozilla.org/1268728
|
|
// [-] https://www.fxsitecompat.com/en-CA/docs/2016/rc4-support-has-been-completely-removed/
|
|
user_pref("security.ssl3.ecdhe_ecdsa_rc4_128_sha", false);
|
|
user_pref("security.ssl3.ecdhe_rsa_rc4_128_sha", false);
|
|
user_pref("security.ssl3.rsa_rc4_128_md5", false);
|
|
user_pref("security.ssl3.rsa_rc4_128_sha", false);
|
|
// 1809: remove Mozilla's plugin update URL
|
|
// [-] https://bugzilla.mozilla.org/1277905
|
|
user_pref("plugins.update.url", "");
|
|
// ***/
|
|
/* FF51
|
|
// 0702: disable SPDY
|
|
// [-] https://bugzilla.mozilla.org/1248197
|
|
user_pref("network.http.spdy.enabled.v3-1", false);
|
|
// 1851: delay play of videos until they're visible
|
|
// [1] https://bugzilla.mozilla.org/1180563
|
|
// [-] https://bugzilla.mozilla.org/1262053
|
|
user_pref("media.block-play-until-visible", true);
|
|
// 2504: disable virtual reality devices
|
|
// [-] https://bugzilla.mozilla.org/1250244
|
|
user_pref("dom.vr.oculus050.enabled", false);
|
|
// ***/
|
|
/* FF52
|
|
// 1601: disable referer from an SSL Website
|
|
// [-] https://bugzilla.mozilla.org/1308725
|
|
user_pref("network.http.sendSecureXSiteReferrer", false);
|
|
// 1850: disable Adobe EME "Primetime CDM" (Content Decryption Module)
|
|
// [1] https://trac.torproject.org/projects/tor/ticket/16285
|
|
// [-] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1329538,1337121 // FF52
|
|
// [-] https://bugzilla.mozilla.org/1329543 // FF53
|
|
user_pref("media.gmp-eme-adobe.enabled", false);
|
|
user_pref("media.gmp-eme-adobe.visible", false);
|
|
user_pref("media.gmp-eme-adobe.autoupdate", false);
|
|
// 2405: disable WebTelephony API
|
|
// [1] https://wiki.mozilla.org/WebAPI/Security/WebTelephony
|
|
// [-] https://bugzilla.mozilla.org/1309719
|
|
user_pref("dom.telephony.enabled", false);
|
|
// ***/
|
|
/* FF53
|
|
// 1265: block rc4 fallback
|
|
// [-] https://bugzilla.mozilla.org/1130670
|
|
user_pref("security.tls.unrestricted_rc4_fallback", false);
|
|
// 1806: disable Acrobat, Quicktime, WMP (the string = min version number allowed)
|
|
// [-] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1317108,1317109,1317110
|
|
user_pref("plugin.scan.Acrobat", "99999");
|
|
user_pref("plugin.scan.Quicktime", "99999");
|
|
user_pref("plugin.scan.WindowsMediaPlayer", "99999");
|
|
// 2022: disable screensharing
|
|
// [-] https://bugzilla.mozilla.org/1329562
|
|
user_pref("media.getusermedia.screensharing.allow_on_old_platforms", false);
|
|
// 2507: disable keyboard fingerprinting
|
|
// [-] https://bugzilla.mozilla.org/1322736
|
|
user_pref("dom.beforeAfterKeyboardEvent.enabled", false);
|
|
// ***/
|
|
/* FF54
|
|
// 0415: disable reporting URLs (safe browsing)
|
|
// [-] https://bugzilla.mozilla.org/1288633
|
|
user_pref("browser.safebrowsing.reportMalwareMistakeURL", "");
|
|
user_pref("browser.safebrowsing.reportPhishMistakeURL", "");
|
|
// 1830: block websites detecting DRM is disabled
|
|
// [-] https://bugzilla.mozilla.org/1242321
|
|
user_pref("media.eme.apiVisible", false);
|
|
// 2425: disable Archive Reader API
|
|
// i.e. reading archive contents directly in the browser, through DOM file objects
|
|
// [-] https://bugzilla.mozilla.org/1342361
|
|
user_pref("dom.archivereader.enabled", false);
|
|
// ***/
|
|
/* FF55
|
|
// 0209: disable geolocation on non-secure origins [FF54+]
|
|
// [1] https://bugzilla.mozilla.org/1269531
|
|
// [-] https://bugzilla.mozilla.org/1072859
|
|
user_pref("geo.security.allowinsecure", false);
|
|
// 0336: disable "Heartbeat" (Mozilla user rating telemetry) [FF37+]
|
|
// [1] https://trac.torproject.org/projects/tor/ticket/18738
|
|
// [-] https://bugzilla.mozilla.org/1361578
|
|
user_pref("browser.selfsupport.enabled", false); // [HIDDEN PREF]
|
|
user_pref("browser.selfsupport.url", "");
|
|
// 0360: disable new tab "pings"
|
|
// [-] https://bugzilla.mozilla.org/1241390
|
|
user_pref("browser.newtabpage.directory.ping", "data:text/plain,");
|
|
// 0861: disable saving form history on secure websites
|
|
// [-] https://bugzilla.mozilla.org/1361220
|
|
user_pref("browser.formfill.saveHttpsForms", false);
|
|
// 0863: disable Form Autofill [FF54+] - replaced by extensions.formautofill.*
|
|
// [-] https://bugzilla.mozilla.org/1364334
|
|
user_pref("browser.formautofill.enabled", false);
|
|
// 2410: disable User Timing API
|
|
// [1] https://trac.torproject.org/projects/tor/ticket/16336
|
|
// [-] https://bugzilla.mozilla.org/1344669
|
|
user_pref("dom.enable_user_timing", false);
|
|
// 2507: disable keyboard fingerprinting (physical keyboards) [FF38+]
|
|
// The Keyboard API allows tracking the "read parameter" of pressed keys in forms on
|
|
// web pages. These parameters vary between types of keyboard layouts such as QWERTY,
|
|
// AZERTY, Dvorak, and between various languages, e.g. German vs English.
|
|
// [WARNING] Don't use if Android + physical keyboard
|
|
// [1] https://developer.mozilla.org/docs/Web/API/KeyboardEvent/code
|
|
// [2] https://www.privacy-handbuch.de/handbuch_21v.htm
|
|
// [-] https://bugzilla.mozilla.org/1352949
|
|
user_pref("dom.keyboardevent.code.enabled", false);
|
|
// 5015: disable tab animation - replaced by toolkit.cosmeticAnimations.enabled
|
|
// [-] https://bugzilla.mozilla.org/1352069
|
|
user_pref("browser.tabs.animate", false);
|
|
// 5016: disable fullscreeen animation - replaced by toolkit.cosmeticAnimations.enabled
|
|
// [-] https://bugzilla.mozilla.org/1352069
|
|
user_pref("browser.fullscreen.animate", false);
|
|
// ***/
|
|
/* FF56
|
|
// 0515: disable Screenshots (rollout pref only) [FF54+]
|
|
// [-] https://bugzilla.mozilla.org/1386333
|
|
// user_pref("extensions.screenshots.system-disabled", true);
|
|
// 0517: disable Form Autofill [FF55+] - replaced by extensions.formautofill.available
|
|
// [-] https://bugzilla.mozilla.org/1385201
|
|
user_pref("extensions.formautofill.experimental", false);
|
|
// ***/
|
|
/* FF57
|
|
// 0374: disable "social" integration
|
|
// [1] https://developer.mozilla.org/docs/Mozilla/Projects/Social_API
|
|
// [-] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1388902,1406193 (some leftovers were removed in FF58)
|
|
user_pref("social.whitelist", "");
|
|
user_pref("social.toast-notifications.enabled", false);
|
|
user_pref("social.shareDirectory", "");
|
|
user_pref("social.remote-install.enabled", false);
|
|
user_pref("social.directories", "");
|
|
user_pref("social.share.activationPanelEnabled", false);
|
|
user_pref("social.enabled", false); // [HIDDEN PREF]
|
|
// 1830: disable DRM's EME WideVineAdapter [FF55+]
|
|
// [-] https://bugzilla.mozilla.org/1395468
|
|
user_pref("media.eme.chromium-api.enabled", false);
|
|
// 2608: disable WebIDE extension downloads (Valence)
|
|
// [1] https://trac.torproject.org/projects/tor/ticket/16222
|
|
// [-] https://bugzilla.mozilla.org/1393497
|
|
user_pref("devtools.webide.autoinstallFxdtAdapters", false);
|
|
user_pref("devtools.webide.adaptersAddonURL", "");
|
|
// 2600's: disable SimpleServiceDiscovery - which can bypass proxy settings - e.g. Roku
|
|
// [1] https://trac.torproject.org/projects/tor/ticket/16222
|
|
// [-] https://bugzilla.mozilla.org/1393582
|
|
user_pref("browser.casting.enabled", false);
|
|
// 5022: hide recently bookmarked items (you still have the original bookmarks) [FF49+]
|
|
// [-] https://bugzilla.mozilla.org/1401238
|
|
user_pref("browser.bookmarks.showRecentlyBookmarked", false);
|
|
// ***/
|
|
/* FF58
|
|
// 0351: disable sending of crash reports [FF51+] - replaced by *.autoSubmit2
|
|
// [-] https://bugzilla.mozilla.org/1424373
|
|
user_pref("browser.crashReports.unsubmittedCheck.autoSubmit", false);
|
|
// ***/
|
|
/* FF59
|
|
// 0203: disable using OS locale, force APP locale - replaced by intl.locale.requested
|
|
// [-] https://bugzilla.mozilla.org/1414390
|
|
user_pref("intl.locale.matchOS", false);
|
|
// 0204: set APP locale - replaced by intl.locale.requested
|
|
// [-] https://bugzilla.mozilla.org/1414390
|
|
user_pref("general.useragent.locale", "en-US");
|
|
// 0333b: disable about:healthreport page (which connects to Mozilla for locale/css+js+json)
|
|
// If you have disabled health reports, then this about page is useless - disable it
|
|
// If you want to see what health data is present, then this must be set at default
|
|
// [-] https://bugzilla.mozilla.org/1352497
|
|
user_pref("datareporting.healthreport.about.reportUrl", "data:,");
|
|
// 0511: disable FlyWeb [FF49+]
|
|
// Flyweb is a set of APIs for advertising and discovering local-area web servers
|
|
// [1] https://flyweb.github.io/
|
|
// [2] https://wiki.mozilla.org/FlyWeb/Security_scenarios
|
|
// [3] https://www.ghacks.net/2016/07/26/firefox-flyweb/
|
|
// [-] https://bugzilla.mozilla.org/1374574
|
|
user_pref("dom.flyweb.enabled", false);
|
|
// 1007: disable randomized FF HTTP cache decay experiments
|
|
// [1] https://trac.torproject.org/projects/tor/ticket/13575
|
|
// [-] https://bugzilla.mozilla.org/1430197
|
|
user_pref("browser.cache.frecency_experiment", -1);
|
|
// 1242: enable Mixed-Content-Blocker to use the HSTS cache but disable the HSTS Priming requests [FF51+]
|
|
// Allow resources from domains with an existing HSTS cache record or in the HSTS preload list
|
|
// to be upgraded to HTTPS internally but disable sending out HSTS Priming requests, because
|
|
// those may cause noticeable delays e.g. requests time out or are not handled well by servers
|
|
// [NOTE] If you want to use the priming requests make sure 'use_hsts' is also true
|
|
// [1] https://bugzilla.mozilla.org/1246540#c145
|
|
// [-] https://bugzilla.mozilla.org/1424917
|
|
user_pref("security.mixed_content.use_hsts", true);
|
|
user_pref("security.mixed_content.send_hsts_priming", false);
|
|
// 1606: set the default Referrer Policy [FF53+] - replaced by network.http.referer.defaultPolicy
|
|
// [-] https://bugzilla.mozilla.org/587523
|
|
user_pref("network.http.referer.userControlPolicy", 3);
|
|
// 1804: disable plugins using external/untrusted scripts with XPCOM or XPConnect
|
|
// [-] (part8) https://bugzilla.mozilla.org/1416703#c21
|
|
user_pref("security.xpconnect.plugin.unrestricted", false);
|
|
// 2022: disable screensharing domain whitelist
|
|
// [-] https://bugzilla.mozilla.org/1411742
|
|
user_pref("media.getusermedia.screensharing.allowed_domains", "");
|
|
// 2023: disable camera stuff
|
|
// [-] (part7) https://bugzilla.mozilla.org/1416703#c21
|
|
user_pref("camera.control.face_detection.enabled", false);
|
|
// 2202: prevent scripts from changing the status text
|
|
// [-] https://bugzilla.mozilla.org/1425999
|
|
user_pref("dom.disable_window_status_change", true);
|
|
// 2416: disable idle observation
|
|
// [-] (part7) https://bugzilla.mozilla.org/1416703#c21
|
|
user_pref("dom.idle-observers-api.enabled", false);
|
|
// ***/
|
|
/* FF60
|
|
// 0360: disable new tab tile ads & preload & marketing junk
|
|
// [-] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1370930,1433133
|
|
user_pref("browser.newtabpage.directory.source", "data:text/plain,");
|
|
user_pref("browser.newtabpage.enhanced", false);
|
|
user_pref("browser.newtabpage.introShown", true);
|
|
// 0512: disable Shield [FF53+] - renamed to app.normandy.* (see 0503)
|
|
// Shield is an telemetry system (including Heartbeat) that can also push and test "recipes"
|
|
// [1] https://wiki.mozilla.org/Firefox/Shield
|
|
// [2] https://github.com/mozilla/normandy
|
|
// [-] https://bugzilla.mozilla.org/1436113
|
|
user_pref("extensions.shield-recipe-client.enabled", false);
|
|
user_pref("extensions.shield-recipe-client.api_url", "");
|
|
// 0514: disable Activity Stream [FF54+]
|
|
// [-] https://bugzilla.mozilla.org/1433324
|
|
user_pref("browser.newtabpage.activity-stream.enabled", false);
|
|
// 2301: disable workers
|
|
// [SETUP-WEB] Disabling workers *will* break sites (e.g. Google Street View, Twitter)
|
|
// [NOTE] CVE-2016-5259, CVE-2016-2812, CVE-2016-1949, CVE-2016-5287 (fixed)
|
|
// [-] https://bugzilla.mozilla.org/1434934
|
|
user_pref("dom.workers.enabled", false);
|
|
// 5000's: open "page/selection source" in a new window
|
|
// [-] https://bugzilla.mozilla.org/1418403
|
|
// user_pref("view_source.tab", false);
|
|
// ***/
|
|
|
|
/* ESR60.x still uses all the following prefs
|
|
// [NOTE] replace the * with a slash in the line above to re-enable them
|
|
// FF61
|
|
// 0501: disable experiments
|
|
// [1] https://wiki.mozilla.org/Telemetry/Experiments
|
|
// [-] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1420908,1450801
|
|
user_pref("experiments.enabled", false);
|
|
user_pref("experiments.manifest.uri", "");
|
|
user_pref("experiments.supported", false);
|
|
user_pref("experiments.activeExperiment", false);
|
|
// 2612: disable remote JAR files being opened, regardless of content type [FF42+]
|
|
// [1] https://bugzilla.mozilla.org/1173171
|
|
// [2] https://www.fxsitecompat.com/en-CA/docs/2015/jar-protocol-support-has-been-disabled-by-default/
|
|
// [-] https://bugzilla.mozilla.org/1427726
|
|
user_pref("network.jar.block-remote-files", true);
|
|
// 2613: disable JAR from opening Unsafe File Types
|
|
// [-] https://bugzilla.mozilla.org/1427726
|
|
user_pref("network.jar.open-unsafe-types", false);
|
|
// * * * /
|
|
// FF62
|
|
// 1803: disable Java plugin
|
|
// [-] (part5) https://bugzilla.mozilla.org/1461243
|
|
user_pref("plugin.state.java", 0);
|
|
// * * * /
|
|
// FF63
|
|
// 0202: disable GeoIP-based search results
|
|
// [NOTE] May not be hidden if Firefox has changed your settings due to your locale
|
|
// [-] https://bugzilla.mozilla.org/1462015
|
|
user_pref("browser.search.countryCode", "US"); // [HIDDEN PREF]
|
|
// 0301a: disable auto-update checks for Firefox
|
|
// [SETTING] General>Firefox Updates>Never check for updates
|
|
// [-] https://bugzilla.mozilla.org/1420514
|
|
// user_pref("app.update.enabled", false);
|
|
// 0402: enable Kinto blocklist updates [FF50+]
|
|
// What is Kinto?: https://wiki.mozilla.org/Firefox/Kinto#Specifications
|
|
// As Firefox transitions to Kinto, the blocklists have been broken down into entries for certs to be
|
|
// revoked, extensions and plugins to be disabled, and gfx environments that cause problems or crashes
|
|
// [-] https://bugzilla.mozilla.org/1458917
|
|
user_pref("services.blocklist.update_enabled", true); // [DEFAULT: true]
|
|
// 0503: disable "Savant" Shield study [FF61+]
|
|
// [-] https://bugzilla.mozilla.org/1457226
|
|
user_pref("shield.savant.enabled", false);
|
|
// 1031: disable favicons in tabs and new bookmarks - merged into browser.chrome.site_icons
|
|
// [-] https://bugzilla.mozilla.org/1453751
|
|
// user_pref("browser.chrome.favicons", false);
|
|
// 2030: disable auto-play of HTML5 media - replaced by media.autoplay.default
|
|
// [SETUP-WEB] This may break video playback on various sites
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// [-] https://bugzilla.mozilla.org/1470082
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user_pref("media.autoplay.enabled", false);
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// 2704: set cookie lifetime in days (see 2703)
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// [-] https://bugzilla.mozilla.org/1457170
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// user_pref("network.cookie.lifetime.days", 90); // [DEFAULT: 90]
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// 5000's: enable "Ctrl+Tab cycles through tabs in recently used order" - replaced by browser.ctrlTab.recentlyUsedOrder
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// [-] https://bugzilla.mozilla.org/1473595
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// user_pref("browser.ctrlTab.previews", true);
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// * * * /
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// FF64
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// 0516: disable Onboarding [FF55+]
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// Onboarding is an interactive tour/setup for new installs/profiles and features. Every time
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// about:home or about:newtab is opened, the onboarding overlay is injected into that page
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// [NOTE] Onboarding uses Google Analytics [2], and leaks resource://URIs [3]
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// [1] https://wiki.mozilla.org/Firefox/Onboarding
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// [2] https://github.com/mozilla/onboard/commit/db4d6c8726c89a5d6a241c1b1065827b525c5baf
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// [3] https://bugzilla.mozilla.org/863246#c154
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// [-] https://bugzilla.mozilla.org/1462415
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user_pref("browser.onboarding.enabled", false);
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// 2608: disable WebIDE ADB extension downloads - both renamed
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|
// [1] https://trac.torproject.org/projects/tor/ticket/16222
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|
// [-] https://bugzilla.mozilla.org/1491315
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user_pref("devtools.webide.autoinstallADBHelper", false);
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user_pref("devtools.webide.adbAddonURL", "");
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// 2681: disable CSP violation events [FF59+]
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// [1] https://developer.mozilla.org/docs/Web/API/SecurityPolicyViolationEvent
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// [-] https://bugzilla.mozilla.org/1488165
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user_pref("security.csp.enable_violation_events", false);
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// * * * /
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// ***/
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|
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/* END: internal custom pref to test for syntax errors ***/
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user_pref("_user.js.parrot", "SUCCESS: No no he's not dead, he's, he's restin'!");
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