From b814b88b93700335279a73b9186010f1f06f5c25 Mon Sep 17 00:00:00 2001 From: Samuel FORESTIER Date: Thu, 22 Aug 2024 18:21:57 +0200 Subject: [PATCH] Applies Arkenfox v115.1..v128.0 migration --- user.js | 538 ++++++++++++++++++++++++++++++++++---------------------- 1 file changed, 325 insertions(+), 213 deletions(-) diff --git a/user.js b/user.js index 5d65bb8..92d0d2f 100644 --- a/user.js +++ b/user.js @@ -1,6 +1,6 @@ /****** * name: thunderbird user.js -* date: 21 August 2024 +* date: 31 August 2024 * version: v128.0-beta1 * url: https://github.com/HorlogeSkynet/thunderbird-user.js * license: MIT (https://github.com/HorlogeSkynet/thunderbird-user.js/blob/master/LICENSE) @@ -27,16 +27,21 @@ [SETUP-CHROME] changes how Thunderbird itself behaves (i.e. not directly website related) * RELEASES: https://github.com/HorlogeSkynet/thunderbird-user.js/releases - * It is best to use the release that is optimized for and matches your Thunderbird version - * ESR102 - - If you are not using thunderbird-user.js v102-1... (not a definitive list) - - 2815: clearOnShutdown cookies + offlineApps should be false - - 9999: switch the appropriate deprecated section(s) back on + + * Use the thunderbird-user.js release that matches your Thunderbird version + - DON'T wait for thunderbird-user.js to update Thunderbird, nothing major changes these days + * Each release + - run prefsCleaner to reset prefs made inactive, including deprecated (9999) + * If you use a previous ESR + - It is recommended to not use the updater, or you will get a later version which may cause issues. + So you should manually append your overrides (and keep a copy), and manually update when you + change ESR releases (thunderbird-user.js is already past that release) + - If you decide to keep updating, then the onus is on you - also see section 9999 * INDEX: 0100: STARTUP - 0200: GEOLOCATION / LANGUAGE / LOCALE + 0200: GEOLOCATION 0300: QUIETER BIRD 0400: SAFE BROWSING 0600: BLOCK IMPLICIT OUTBOUND @@ -45,7 +50,6 @@ 0900: PASSWORDS 1000: DISK AVOIDANCE 1200: HTTPS (SSL/TLS / OCSP / CERTS / HPKP) - 1400: FONTS 1600: REFERERS 1700: CONTAINERS 2000: PLUGINS / MEDIA / WEBRTC @@ -53,7 +57,8 @@ 2600: MISCELLANEOUS 2700: ETP (ENHANCED TRACKING PROTECTION) 2800: SHUTDOWN & SANITIZING - 4500: RFP (RESIST FINGERPRINTING) + 4000: FPP (fingerprintingProtection) + 4500: OPTIONAL RFP (resistFingerprinting) 5000: OPTIONAL OPSEC 5500: OPTIONAL HARDENING 6000: DON'T TOUCH @@ -64,7 +69,7 @@ 9200: EMAIL COMPOSITION (ENCODING / FORMAT / VIEW) 9300: OTHER THUNDERBIRD COMPONENTS (CHAT / CALENDAR / RSS) 9400: THUNDERBIRD ENCRYPTION (OPENPGP / GNUPG) - 9999: DEPRECATED / REMOVED / LEGACY / RENAMED + 9999: DEPRECATED / RENAMED ******/ @@ -87,27 +92,12 @@ user_pref("_user.js.parrot", "0100 syntax error: the parrot's dead!"); * true=? (default), false=blank page ***/ user_pref("browser.newtabpage.enabled", false); -/*** [SECTION 0200]: GEOLOCATION / LANGUAGE / LOCALE ***/ +/*** [SECTION 0200]: GEOLOCATION ***/ user_pref("_user.js.parrot", "0200 syntax error: the parrot's definitely deceased!"); -/* 0201: use Mozilla geolocation service instead of Google if permission is granted [FF74+] - * Optionally enable logging to the console (defaults to false) ***/ -user_pref("geo.provider.network.url", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%"); - // user_pref("geo.provider.network.logging.enabled", true); // [HIDDEN PREF] /* 0202: disable using the OS's geolocation service ***/ user_pref("geo.provider.ms-windows-location", false); // [WINDOWS] user_pref("geo.provider.use_corelocation", false); // [MAC] -user_pref("geo.provider.use_gpsd", false); // [LINUX] user_pref("geo.provider.use_geoclue", false); // [FF102+] [LINUX] -/* 0210: set preferred language for displaying pages - * [SETTING] General > Language & Appearance > Language > Choose the language used to display... - * [TEST] https://addons.mozilla.org/about ***/ -user_pref("intl.accept_languages", "en-US, en"); -/* 0210b: Set dictionary to US ***/ -user_pref("spellchecker.dictionary", "en-US"); -/* 0211: use en-US locale regardless of the system or region locale - * [SETUP-WEB] May break some input methods e.g xim/ibus for CJK languages [1] - * [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=867501,1629630 ***/ -user_pref("javascript.use_us_english_locale", true); // [HIDDEN PREF] /*** [SECTION 0300]: QUIETER BIRD ***/ user_pref("_user.js.parrot", "0300 syntax error: the parrot's not pinin' for the fjords!"); @@ -116,6 +106,13 @@ user_pref("_user.js.parrot", "0300 syntax error: the parrot's not pinin' for the user_pref("extensions.getAddons.showPane", false); // [HIDDEN PREF] /* 0321: disable recommendations in about:addons' Extensions and Themes panes [FF68+] ***/ user_pref("extensions.htmlaboutaddons.recommendations.enabled", false); +/* 0322: disable personalized Extension Recommendations in about:addons and AMO [FF65+] + * [NOTE] This pref has no effect when Health Reports (0331) are disabled + * [1] https://support.mozilla.org/kb/personalized-extension-recommendations ***/ +user_pref("browser.discovery.enabled", false); +/* 0323: disable shopping experience [FF116+] + * [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1840156#c0 ***/ +user_pref("browser.shopping.experience2023.enabled", false); // [DEFAULT: false] /** TELEMETRY ***/ /* 0330: disable new data submission [FF41+] @@ -148,9 +145,6 @@ user_pref("toolkit.telemetry.firstShutdownPing.enabled", false); // [FF57+] user_pref("toolkit.telemetry.coverage.opt-out", true); // [HIDDEN PREF] user_pref("toolkit.coverage.opt-out", true); // [FF64+] [HIDDEN PREF] user_pref("toolkit.coverage.endpoint.base", ""); -/* 0334: disable PingCentre telemetry (used in several System Add-ons) [FF57+] - * Defense-in-depth: currently covered by 0331 ***/ -user_pref("browser.ping-centre.telemetry", false); /** STUDIES ***/ /* 0340: disable Studies @@ -263,7 +257,7 @@ user_pref("network.prefetch-next", false); /* 0602: disable DNS prefetching * [1] https://developer.mozilla.org/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control ***/ user_pref("network.dns.disablePrefetch", true); - // user_pref("network.dns.disablePrefetchFromHTTPS", true); // [DEFAULT: true] +user_pref("network.dns.disablePrefetchFromHTTPS", true); /* 0603: disable predictor / prefetching ***/ user_pref("network.predictor.enabled", false); user_pref("network.predictor.enable-prefetch", false); // [FF48+] [DEFAULT: false] @@ -286,15 +280,15 @@ user_pref("_user.js.parrot", "0700 syntax error: the parrot's given up the ghost user_pref("network.proxy.socks_remote_dns", true); /* 0703: disable using UNC (Uniform Naming Convention) paths [FF61+] * [SETUP-CHROME] Can break extensions for profiles on network shares - * [1] https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/26424 ***/ + * [1] https://bugzilla.mozilla.org/1413868 ***/ user_pref("network.file.disable_unc_paths", true); // [HIDDEN PREF] /* 0704: disable GIO as a potential proxy bypass vector [FF60+] * Gvfs/GIO has a set of supported protocols like obex, network, archive, computer, - * dav, cdda, gphoto2, trash, etc. By default only sftp is accepted (FF87+) + * dav, cdda, gphoto2, trash, etc. From FF87-117, by default only sftp was accepted * [1] https://bugzilla.mozilla.org/1433507 * [2] https://en.wikipedia.org/wiki/GVfs * [3] https://en.wikipedia.org/wiki/GIO_(software) ***/ -user_pref("network.gio.supported-protocols", ""); // [HIDDEN PREF] +user_pref("network.gio.supported-protocols", ""); // [HIDDEN PREF] [DEFAULT: "" FF118+] /* 0705: disable proxy direct failover for system requests [FF91+] * [WARNING] Default true is a security feature against malicious extensions [1] * [SETUP-CHROME] If you use a proxy and you trust your extensions @@ -306,41 +300,59 @@ user_pref("network.gio.supported-protocols", ""); // [HIDDEN PREF] * [SETUP-CHROME] If you use a proxy and you understand the security impact * [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1732792,1733994,1733481 ***/ // user_pref("network.proxy.allow_bypass", false); -/* 0710: disable DNS-over-HTTPS (DoH) rollout [FF60+] - * 0=default, 2=increased (TRR (Trusted Recursive Resolver) first), 3=max (TRR only), 5=off +/* 0710: enable DNS-over-HTTPS (DoH) [FF60+] + * 0=default, 2=increased (TRR (Trusted Recursive Resolver) first), 3=max (TRR only), 5=off (no rollout) * see "doh-rollout.home-region": USA 2019, Canada 2021, Russia/Ukraine 2022 [3] - * [SETTING] General > Network & Disk Space > Connection > Settings... > Enable DNS over HTTPS + * [SETTING] Privacy & Security>DNS over HTTPS * [1] https://hacks.mozilla.org/2018/05/a-cartoon-intro-to-dns-over-https/ * [2] https://wiki.mozilla.org/Security/DOH-resolver-policy - // * [3] https://support.mozilla.org/en-US/kb/firefox-dns-over-https + * [3] https://support.mozilla.org/kb/firefox-dns-over-https * [4] https://www.eff.org/deeplinks/2020/12/dns-doh-and-odoh-oh-my-year-review-2020 ***/ - // user_pref("network.trr.mode", 5); -/* 0706: disable proxy direct failover for system requests [FF91+] - * [WARNING] Default true is a security feature against malicious extensions [1] - * [SETUP-CHROME] If you use a proxy and you trust your extensions - * [1] https://blog.mozilla.org/security/2021/10/25/securing-the-proxy-api-for-firefox-add-ons/ ***/ - // user_pref("network.proxy.failover_direct", false); + // user_pref("network.trr.mode", 3); +/* 0712: set DoH provider + * The custom uri is the value shown when you "Choose provider>Custom>" + * [NOTE] If you USE custom then "network.trr.uri" should be set the same + * [SETTING] Privacy & Security>DNS over HTTPS>Increased/Max>Choose provider ***/ + // user_pref("network.trr.uri", "https://example.dns"); + // user_pref("network.trr.custom_uri", "https://example.dns"); /*** [SECTION 0800]: LOCATION BAR / SEARCH BAR / SUGGESTIONS / HISTORY / FORMS ***/ user_pref("_user.js.parrot", "0800 syntax error: the parrot's ceased to be!"); -/* 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); // [DEFAULT: false FF104+] -/* 0804: disable live search suggestions - * [NOTE] Both must be true for the location bar to work +/* 0801: disable location bar making speculative connections [FF56+] + * [1] https://bugzilla.mozilla.org/1348275 ***/ +user_pref("browser.urlbar.speculativeConnect.enabled", false); +/* 0802: disable location bar contextual suggestions + * [NOTE] The UI is controlled by the .enabled pref + * [1] https://blog.mozilla.org/data/2021/09/15/data-and-firefox-suggest/ ***/ +user_pref("browser.urlbar.quicksuggest.enabled", false); // [FF92+] +user_pref("browser.urlbar.suggest.quicksuggest.nonsponsored", false); // [FF95+] +user_pref("browser.urlbar.suggest.quicksuggest.sponsored", false); // [FF92+] +/* 0803: disable live search suggestions + * [NOTE] Both must be true for live search to work in the location bar * [SETUP-CHROME] Override this if you trust and use a privacy respecting search engine ***/ user_pref("browser.search.suggest.enabled", false); +user_pref("browser.urlbar.suggest.searches", false); +/* 0805: disable urlbar trending search suggestions [FF118+] ***/ +user_pref("browser.urlbar.trending.featureGate", false); +/* 0806: disable urlbar suggestions ***/ +user_pref("browser.urlbar.addons.featureGate", false); // [FF115+] +user_pref("browser.urlbar.mdn.featureGate", false); // [FF117+] [HIDDEN PREF] +user_pref("browser.urlbar.weather.featureGate", false); // [FF108+] [DEFAULT: false] +user_pref("browser.urlbar.yelp.featureGate", false); // [FF124+] [DEFAULT: false] +/* 0807: disable urlbar clipboard suggestions [FF118+] ***/ +user_pref("browser.urlbar.clipboard.featureGate", false); +/* 0808: disable recent searches [FF120+] + * [NOTE] Recent searches are cleared with history (2811) + * [1] https://support.mozilla.org/kb/search-suggestions-firefox ***/ + // user_pref("browser.urlbar.recentsearches.featureGate", false); /* 0810: disable search and form history - * [SETUP-WEB] Be aware that autocomplete form data can be read by third parties [1][2] * [NOTE] We also clear formdata on exit (2811) + * [SETUP-WEB] Be aware that autocomplete form data can be read by third parties [1][2] * [1] https://blog.mindedsecurity.com/2011/10/autocompleteagain.html * [2] https://bugzilla.mozilla.org/381681 ***/ user_pref("browser.formfill.enable", false); +/* 0815: disable tab-to-search [FF85+] ***/ +user_pref("browser.urlbar.suggest.engines", false); /* 0820: disable coloring of visited links * Bulk rapid history sniffing was mitigated in 2010 [1][2]. Slower and more expensive * redraw timing attacks were largely mitigated in FF77+ [3]. Using RFP (4501) further hampers timing @@ -352,6 +364,9 @@ user_pref("browser.formfill.enable", false); * [4] https://earthlng.github.io/testpages/visited_links.html (see github wiki APPENDIX A on how to use) * [5] https://lcamtuf.blogspot.com/2016/08/css-mix-blend-mode-is-bad-for-keeping.html ***/ user_pref("layout.css.visited_links_enabled", false); +/* 0830: enable separate default search engine in Private Windows and its UI setting ***/ +user_pref("browser.search.separatePrivateDefault", true); // [FF70+] +user_pref("browser.search.separatePrivateDefault.ui.enabled", true); // [FF71+] /*** [SECTION 0900]: PASSWORDS [1] https://support.mozilla.org/kb/use-primary-password-protect-stored-logins-and-pas @@ -387,8 +402,8 @@ user_pref("network.auth.subresource-http-auth-allow", 1); /*** [SECTION 1000]: DISK AVOIDANCE ***/ user_pref("_user.js.parrot", "1000 syntax error: the parrot's gone to meet 'is maker!"); /* 1001: disable disk cache - * [SETUP-CHROME] If you think disk cache helps perf, then feel free to override this - * [NOTE] We also clear cache on exit (2811) ***/ + * [NOTE] We also clear cache on exit (2811) + * [SETUP-CHROME] If you think disk cache helps perf, then feel free to override this ***/ user_pref("browser.cache.disk.enable", false); /* 1002: disable media cache from writing to disk in Private Browsing * [NOTE] MSE (Media Source Extensions) are already stored in-memory in PB ***/ @@ -398,6 +413,14 @@ user_pref("media.memory_cache_max_size", 65536); * define on which sites to save extra session data such as form content, cookies and POST data * 0=everywhere, 1=unencrypted sites, 2=nowhere ***/ user_pref("browser.sessionstore.privacy_level", 2); +/* 1005: disable automatic Thunderbird start and session restore after reboot [FF62+] [WINDOWS] + * [1] https://bugzilla.mozilla.org/603903 ***/ +user_pref("toolkit.winRegisterApplicationRestart", false); +/* 1006: disable favicons in shortcuts [WINDOWS] + * 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); /* 1901: disable disk cache for messages not in offline store */ user_pref("mail.imap.use_disk_cache2", false); @@ -416,7 +439,7 @@ user_pref("_user.js.parrot", "1200 syntax error: the parrot's a stiff!"); * but the problem is that the browser can't know that. Setting this pref to true is the only way for the * browser to ensure there will be no unsafe renegotiations on the channel between the browser and the server * [SETUP-WEB] SSL_ERROR_UNSAFE_NEGOTIATION: is it worth overriding this for that one site? - * [STATS] SSL Labs (Feb 2023) reports over 99.3% of top sites have secure renegotiation [4] + * [STATS] SSL Labs (May 2024) reports over 99.7% of top sites have secure renegotiation [4] * [1] https://wiki.mozilla.org/Security:Renegotiation * [2] https://datatracker.ietf.org/doc/html/rfc5746 * [3] https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3555 @@ -453,12 +476,6 @@ user_pref("security.OCSP.enabled", 1); // [DEFAULT: 1] user_pref("security.OCSP.require", true); /** CERTS / HPKP (HTTP Public Key Pinning) ***/ -/* 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://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/21686 ***/ -user_pref("security.family_safety.mode", 0); /* 1223: enable strict PKP (Public Key Pinning) * 0=disabled, 1=allow user MiTM (default; such as your antivirus), 2=strict * [SETUP-WEB] MOZILLA_PKIX_ERROR_KEY_PINNING_FAILURE @@ -468,7 +485,7 @@ user_pref("security.cert_pinning.enforcement_level", 2); * 0 = disabled * 1 = consult CRLite but only collect telemetry * 2 = consult CRLite and enforce both "Revoked" and "Not Revoked" results - * 3 = consult CRLite and enforce "Not Revoked" results, but defer to OCSP for "Revoked" (FF99+, default FF100+) + * 3 = consult CRLite and enforce "Not Revoked" results, but defer to OCSP for "Revoked" (default) * [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1429800,1670985,1753071 * [2] https://blog.mozilla.org/security/tag/crlite/ ***/ user_pref("security.remote_settings.crlite_filters.enabled", true); @@ -481,7 +498,7 @@ user_pref("security.pki.crlite_mode", 2); /** MIXED CONTENT ***/ /* 1241: disable insecure passive content (such as images) on https pages ***/ user_pref("security.mixed_content.block_display_content", true); // Defense-in-depth (see 1244) -/* 1244: enable HTTPS-Only mode in all windows [FF76+] +/* 1244: enable HTTPS-Only mode in all windows * When the top-level is HTTPS, insecure subresources are also upgraded (silent fail) * [TEST] http://example.com [upgrade] * [TEST] http://httpforever.com/ | http://http.rip [no upgrade] ***/ @@ -512,18 +529,6 @@ user_pref("security.warn_entering_weak", true); user_pref("security.warn_leaving_secure", true); user_pref("security.warn_viewing_mixed", true); -/*** [SECTION 1400]: FONTS ***/ -user_pref("_user.js.parrot", "1400 syntax error: the parrot's bereft of life!"); -/* 1402: limit font visibility (Windows, Mac, some Linux) [FF94+] - * Uses hardcoded lists with two parts: kBaseFonts + kLangPackFonts [1], bundled fonts are auto-allowed - * In normal windows: uses the first applicable: RFP (4506) over TP over Standard - * In Private Browsing windows: uses the most restrictive between normal and private - * 1=only base system fonts, 2=also fonts from optional language packs, 3=also user-installed fonts - * [1] https://searchfox.org/mozilla-central/search?path=StandardFonts*.inc ***/ - // user_pref("layout.css.font-visibility.private", 1); - // user_pref("layout.css.font-visibility.standard", 1); - // user_pref("layout.css.font-visibility.trackingprotection", 1); - /*** [SECTION 1600]: REFERERS full URI: https://example.com:8888/foo/bar.html?id=1234 scheme+host+port+path: https://example.com:8888/foo/bar.html @@ -541,6 +546,12 @@ user_pref("_user.js.parrot", "1700 syntax error: the parrot's bit the dust!"); * https://wiki.mozilla.org/Security/Contextual_Identity_Project/Containers ***/ user_pref("privacy.userContext.enabled", true); user_pref("privacy.userContext.ui.enabled", true); +/* 1703: set external links to open in site-specific containers [FF123+] + * [SETUP-WEB] Depending on your container extension(s) and their settings + * true=Firefox will not choose a container (so your extension can) + * false=Firefox will choose the container/no-container (default) + * [1] https://bugzilla.mozilla.org/1874599 ***/ + // user_pref("browser.link.force_default_user_context_id_for_external_opens", true); /*** [SECTION 2000]: PLUGINS / MEDIA / WEBRTC ***/ user_pref("_user.js.parrot", "2000 syntax error: the parrot's snuffed it!"); @@ -548,7 +559,7 @@ user_pref("_user.js.parrot", "2000 syntax error: the parrot's snuffed it!"); user_pref("media.peerconnection.ice.proxy_only_if_behind_proxy", true); /* 2003: force a single network interface for ICE candidates generation [FF42+] * When using a system-wide proxy, it uses the proxy interface - * [1] https://developer.mozilla.org/en-US/docs/Web/API/RTCIceCandidate + * [1] https://developer.mozilla.org/docs/Web/API/RTCIceCandidate * [2] https://wiki.mozilla.org/Media/WebRTC/Privacy ***/ user_pref("media.peerconnection.ice.default_address_only", true); /* 2004: force exclusion of private IPs from ICE candidates [FF51+] @@ -566,12 +577,9 @@ user_pref("dom.disable_window_move_resize", true); /*** [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] - * [1] https://support.mozilla.org/kb/accessibility-services ***/ -user_pref("accessibility.force_disabled", 1); -/* 2603: remove temp files opened with an external application - * [1] https://bugzilla.mozilla.org/302433 ***/ -user_pref("browser.helperApps.deleteTempFileOnExit", true); +/* 2603: remove temp files opened from non-PB windows with an external application + * [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=302433,1738574 ***/ +user_pref("browser.download.start_downloads_in_tmp_dir", true); // [FF102+] /* 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", ""); // Defense-in-depth @@ -603,14 +611,15 @@ user_pref("network.IDN_show_punycode", true); * [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=pdf.js+firefox ***/ user_pref("pdfjs.disabled", false); // [DEFAULT: false] user_pref("pdfjs.enableScripting", false); // [FF86+] -/* 2623: disable permissions delegation [FF73+] - * Currently applies to cross-origin geolocation, camera, mic and screen-sharing - * permissions, and fullscreen requests. Disabling delegation means any prompts - * for these will show/use their correct 3rd party origin - * [1] https://groups.google.com/forum/#!topic/mozilla.dev.platform/BdFOMAuCGW8/discussion ***/ -user_pref("permissions.delegation.enabled", false); /* 2624: disable middle click on new tab button opening URLs or searches using clipboard [FF115+] */ user_pref("browser.tabs.searchclipboardfor.middleclick", false); // [DEFAULT: false NON-LINUX] +/* 2630: disable content analysis by DLP (Data Loss Prevention) agents + * DLP agents are background processes on managed computers that allow enterprises to monitor locally running + * applications for data exfiltration events, which they can allow/block based on customer defined DLP policies. + * 0=Block all requests, 1=Warn on all requests (which lets the user decide), 2=Allow all requests + * [1] https://github.com/chromium/content_analysis_sdk */ +user_pref("browser.contentanalysis.enabled", false); // [FF121+] [DEFAULT: false] +user_pref("browser.contentanalysis.default_result", 0); // [FF127+] [DEFAULT: 0] /** DOWNLOADS ***/ /* 2651: enable user interaction for security by always asking where to download @@ -622,13 +631,13 @@ user_pref("browser.download.manager.addToRecentDocs", false); user_pref("browser.download.always_ask_before_handling_new_types", true); /** EXTENSIONS ***/ -/* 2660: lock down allowed extension directories - * [SETUP-CHROME] This will break extensions, language packs, themes and any other - * XPI files which are installed outside of profile and application directories - * [1] https://mike.kaply.com/2012/02/21/understanding-add-on-scopes/ - * [1] https://archive.is/DYjAM (archived) ***/ +/* 2660: limit allowed extension directories + * 1=profile, 2=user, 4=application, 8=system, 16=temporary, 31=all + * The pref value represents the sum: e.g. 5 would be profile and application directories + * [SETUP-CHROME] Breaks usage of files which are installed outside allowed directories + * [1] https://archive.is/DYjAM ***/ user_pref("extensions.enabledScopes", 5); // [HIDDEN PREF] -user_pref("extensions.autoDisableScopes", 15); // [DEFAULT: 15] + // user_pref("extensions.autoDisableScopes", 15); // [DEFAULT: 15] /* 2662: disable webextension restrictions on certain mozilla domains (you also need 4503) [FF60+] * [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1384330,1406795,1415644,1453988 ***/ // user_pref("extensions.webextensions.restrictedDomains", ""); @@ -640,86 +649,132 @@ user_pref("_user.js.parrot", "2700 syntax error: the parrot's joined the bleedin * Opener and redirect heuristics are granted for 30 days, see [3] * [1] https://blog.mozilla.org/security/2021/07/13/smartblock-v2/ * [2] https://hg.mozilla.org/mozilla-central/rev/e5483fd469ab#l4.12 - * [3] https://developer.mozilla.org/en-US/docs/Web/Privacy/State_Partitioning#storage_access_heuristics ***/ + * [3] https://developer.mozilla.org/docs/Web/Privacy/State_Partitioning#storage_access_heuristics ***/ // user_pref("privacy.antitracking.enableWebcompat", false); -/* 2710: enable state partitioning of service workers [FF96+] ***/ -user_pref("privacy.partition.serviceWorkers", true); // [DEFAULT: true FF105+] -/* 2720: enable APS (Always Partitioning Storage) ***/ -user_pref("privacy.partition.always_partition_third_party_non_cookie_storage", true); // [FF104+] [DEFAULT: true FF109+] -user_pref("privacy.partition.always_partition_third_party_non_cookie_storage.exempt_sessionstorage", false); // [FF105+] [DEFAULT: false FF109+] /*** [SECTION 2800]: SHUTDOWN & SANITIZING ***/ user_pref("_user.js.parrot", "2800 syntax error: the parrot's bleedin' demised!"); -/* 2810: enable Thunderbird to clear items on shutdown ***/ +/* 2810: enable Thunderbird to clear items on shutdown + * [NOTE] In FF129+ clearing "siteSettings" on shutdown (2811), or manually via site data (2820) and + * via history (2830), will no longer remove sanitize on shutdown "cookie and site data" site exceptions (2815) ***/ user_pref("privacy.sanitize.sanitizeOnShutdown", true); -/** SANITIZE ON SHUTDOWN: IGNORES "ALLOW" SITE EXCEPTIONS ***/ +/** SANITIZE ON SHUTDOWN: IGNORES "ALLOW" SITE EXCEPTIONS | v2 migration is FF128+ ***/ /* 2811: set/enforce what items to clear on shutdown (if 2810 is true) [SETUP-CHROME] - * [NOTE] If "history" is true, downloads will also be cleared - * [NOTE] "sessions": Active Logins: refers to HTTP Basic Authentication [1], not logins via cookies - * [1] https://en.wikipedia.org/wiki/Basic_access_authentication ***/ + * [NOTE] If "history" is true, downloads will also be cleared ***/ user_pref("privacy.clearOnShutdown.cache", true); // [DEFAULT: true] +user_pref("privacy.clearOnShutdown_v2.cache", true); // [FF128+] [DEFAULT: true] user_pref("privacy.clearOnShutdown.downloads", true); // [DEFAULT: true] user_pref("privacy.clearOnShutdown.formdata", true); // [DEFAULT: true] user_pref("privacy.clearOnShutdown.history", true); // [DEFAULT: true] -user_pref("privacy.clearOnShutdown.sessions", true); // [DEFAULT: true] +user_pref("privacy.clearOnShutdown_v2.historyFormDataAndDownloads", true); // [FF128+] [DEFAULT: true] // user_pref("privacy.clearOnShutdown.siteSettings", false); // [DEFAULT: false] + // user_pref("privacy.clearOnShutdown_v2.siteSettings", false); // [FF128+] [DEFAULT: false] /* 2812: set Session Restore to clear on shutdown (if 2810 is true) [FF34+] * [NOTE] Not needed if Session Restore is not used (0102) or it is already cleared with history (2811) * [NOTE] If true, this prevents resuming from crashes (also see 5008) ***/ // user_pref("privacy.clearOnShutdown.openWindows", true); -/** SANITIZE ON SHUTDOWN: RESPECTS "ALLOW" SITE EXCEPTIONS FF103+ ***/ +/** SANITIZE ON SHUTDOWN: RESPECTS "ALLOW" SITE EXCEPTIONS FF103+ | v2 migration is FF128+ ***/ /* 2815: set "Cookies" and "Site Data" to clear on shutdown (if 2810 is true) [SETUP-CHROME] - * [NOTE] Exceptions: A "cookie" block permission also controls "offlineApps" (see note below). - * serviceWorkers require an "Allow" permission. For cross-domain logins, add exceptions for - * both sites e.g. https://www.youtube.com (site) + https://accounts.google.com (single sign on) + * [NOTE] Exceptions: A "cookie" permission also controls "offlineApps" (see note below). For cross-domain logins, + * add exceptions for both sites e.g. https://www.youtube.com (site) + https://accounts.google.com (single sign on) * [NOTE] "offlineApps": Offline Website Data: localStorage, service worker cache, QuotaManager (IndexedDB, asm-cache) + * [NOTE] "sessions": Active Logins (has no site exceptions): refers to HTTP Basic Authentication [1], not logins via cookies * [WARNING] Be selective with what sites you "Allow", as they also disable partitioning (1767271) * [SETTING] to add site exceptions: Ctrl+I>Permissions>Cookies>Allow (when on the website in question) - * [SETTING] to manage site exceptions: Options>Privacy & Security>Permissions>Settings ***/ + * [SETTING] to manage site exceptions: Options>Privacy & Security>Permissions>Settings + * [1] https://en.wikipedia.org/wiki/Basic_access_authentication ***/ user_pref("privacy.clearOnShutdown.cookies", true); // Cookies user_pref("privacy.clearOnShutdown.offlineApps", true); // Site Data +user_pref("privacy.clearOnShutdown.sessions", true); // Active Logins [DEFAULT: true] +user_pref("privacy.clearOnShutdown_v2.cookiesAndStorage", true); // Cookies, Site Data, Active Logins [FF128+] -/** SANITIZE MANUAL: IGNORES "ALLOW" SITE EXCEPTIONS ***/ -/* 2820: reset default items to clear with Ctrl-Shift-Del [SETUP-CHROME] - * This dialog can also be accessed from the menu History>Clear Recent History +/** SANITIZE SITE DATA: IGNORES "ALLOW" SITE EXCEPTIONS ***/ +/* 2820: set manual "Clear Data" items [SETUP-CHROME] [FF128+] + * Thunderbird remembers your last choices. This will reset them when you start Thunderbird + * [SETTING] Privacy & Security>Browser Privacy>Cookies and Site Data>Clear Data ***/ +user_pref("privacy.clearSiteData.cache", true); +user_pref("privacy.clearSiteData.cookiesAndStorage", false); // keep false until it respects "allow" site exceptions +user_pref("privacy.clearSiteData.historyFormDataAndDownloads", true); + // user_pref("privacy.clearSiteData.siteSettings", false); + +/** SANITIZE HISTORY: IGNORES "ALLOW" SITE EXCEPTIONS | clearHistory migration is FF128+ ***/ +/* 2830: set manual "Clear History" items, also via Ctrl-Shift-Del [SETUP-CHROME] * Thunderbird remembers your last choices. This will reset them when you start Thunderbird * [NOTE] Regardless of what you set "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); // [DEFAULT: true] +user_pref("privacy.clearHistory.cache", true); user_pref("privacy.cpd.formdata", true); // [DEFAULT: true] user_pref("privacy.cpd.history", true); // [DEFAULT: true] + // user_pref("privacy.cpd.downloads", true); // not used, see note above +user_pref("privacy.clearHistory.historyFormDataAndDownloads", true); +user_pref("privacy.cpd.cookies", false); user_pref("privacy.cpd.sessions", true); // [DEFAULT: true] user_pref("privacy.cpd.offlineApps", true); // [DEFAULT: false] -user_pref("privacy.cpd.cookies", true); - // user_pref("privacy.cpd.downloads", true); // not used, see note above +user_pref("privacy.clearHistory.cookiesAndStorage", false); // user_pref("privacy.cpd.openWindows", false); // Session Restore // user_pref("privacy.cpd.passwords", false); // user_pref("privacy.cpd.siteSettings", false); -/* 2822: reset default "Time range to clear" for "Clear Recent History" (2820) + // user_pref("privacy.clearHistory.siteSettings", false); + +/** SANITIZE MANUAL: TIMERANGE ***/ +/* 2840: set "Time range to clear" for "Clear Data" (2820) and "Clear History" (2830) * Thunderbird remembers your last choice. This will reset the value when you start Thunderbird * 0=everything, 1=last hour, 2=last two hours, 3=last four hours, 4=today * [NOTE] Values 5 (last 5 minutes) and 6 (last 24 hours) are not listed in the dropdown, * which will display a blank value, and are not guaranteed to work ***/ user_pref("privacy.sanitize.timeSpan", 0); -/*** [SECTION 4500]: RFP (RESIST FINGERPRINTING) - RFP covers a wide range of ongoing fingerprinting solutions. - It is an all-or-nothing buy in: you cannot pick and choose what parts you want +/*** [SECTION 4000]: FPP (fingerprintingProtection) + RFP (4501) overrides FPP + In FF118+ FPP is on by default in private windows (4001) and in FF119+ is controlled + by ETP (2701). FPP will also use Remote Services in future to relax FPP protections + on a per site basis for compatibility (4004). + https://searchfox.org/mozilla-central/source/toolkit/components/resistfingerprinting/RFPTargetsDefault.inc + + 1826408 - restrict fonts to system (kBaseFonts + kLangPackFonts) (Windows, Mac, some Linux) + https://searchfox.org/mozilla-central/search?path=StandardFonts*.inc + 1858181 - subtly randomize canvas per eTLD+1, per session and per window-mode (FF120+) +***/ +user_pref("_user.js.parrot", "4000 syntax error: the parrot's bereft of life!"); +/* 4001: enable FPP in PB mode [FF114+] + * [NOTE] In FF119+, FPP for all modes (7016) is enabled with ETP Strict (2701) ***/ + // user_pref("privacy.fingerprintingProtection.pbmode", true); // [DEFAULT: true FF118+] +/* 4002: set global FPP overrides [FF114+] + * uses "RFPTargets" [1] which despite the name these are not used by RFP + * e.g. "+AllTargets,-CSSPrefersColorScheme,-JSDateTimeUTC" = all targets but allow prefers-color-scheme and do not change timezone + * e.g. "-AllTargets,+CanvasRandomization,+JSDateTimeUTC" = no targets but do use FPP canvas and change timezone + * [NOTE] Not supported by arkenfox. Either use RFP or FPP at defaults + * [WARNING] Not recommended. Either use RFP or FPP at defaults + * [1] https://searchfox.org/mozilla-central/source/toolkit/components/resistfingerprinting/RFPTargets.inc ***/ + // user_pref("privacy.fingerprintingProtection.overrides", ""); +/* 4003: set granular FPP overrides + * JSON format: e.g."[{\"firstPartyDomain\": \"netflix.com\", \"overrides\": \"-CanvasRandomization,-FrameRate,\"}]" + * [NOTE] Not supported by arkenfox. Either use RFP or FPP at defaults ***/ + // user_pref("privacy.fingerprintingProtection.granularOverrides", ""); +/* 4004: disable remote FPP overrides [FF127+] ***/ + // user_pref("privacy.fingerprintingProtection.remoteOverrides.enabled", false); + +/*** [SECTION 4500]: OPTIONAL RFP (resistFingerprinting) + RFP overrides FPP (4000) + + FF128+ Arkenfox by default uses FPP (automatically enabled with ETP Strict). For most people + this is all you need. To use RFP instead, add RFP (4501) to your overrides, and optionally + add letterboxing (4504), spoof_english (4506), and webgl (4520). + RFP is an all-or-nothing buy in: you cannot pick and choose what parts you want [TEST] https://arkenfox.github.io/TZP/tzp.html [WARNING] DO NOT USE extensions to alter RFP protected metrics 418986 - limit window.screen & CSS media queries (FF41) 1281949 - spoof screen orientation (FF50) - 1330890 - spoof timezone as UTC0 (FF55) 1360039 - spoof navigator.hardwareConcurrency as 2 (FF55) 1217238 - reduce precision of time exposed by javascript (FF55) FF56 - 1369303 - spoof/disable performance API 1333651 - spoof User Agent & Navigator API - version: android version spoofed as ESR + version: android version spoofed as ESR (FF119 or lower) OS: JS spoofed as Windows 10, OS 10.15, Android 10, or Linux | HTTP Headers spoofed as Windows or Android 1369319 - disable device sensor API 1369357 - disable site specific zoom @@ -730,13 +785,12 @@ user_pref("privacy.sanitize.timeSpan", 0); 1369309 - spoof media statistics 1382499 - reduce screen co-ordinate fingerprinting in Touch API 1217290 & 1409677 - enable some fingerprinting resistance for WebGL - 1382545 - reduce fingerprinting in Animation API 1354633 - limit MediaError.message to a whitelist FF58+ 1372073 - spoof/block fingerprinting in MediaDevices API (FF59) Spoof: enumerate devices as one "Internal Camera" and one "Internal Microphone" Block: suppresses the ondevicechange event - 1039069 - warn when language prefs are not set to "en*" (also see 0210, 0211) (FF59) + 1039069 - warn when language prefs are not set to "en*" (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. @@ -755,20 +809,22 @@ user_pref("privacy.sanitize.timeSpan", 0); 1653987 - limit font visibility to bundled and "Base Fonts" (Windows, Mac, some Linux) (FF80) 1461454 - spoof smooth=true and powerEfficient=false for supported media in MediaCapabilities (FF82) 531915 - use fdlibm's sin, cos and tan in jsmath (FF93, ESR91.1) - 1756280 - enforce navigator.pdfViewerEnabled as true and plugins/mimeTypes as hard-coded values (FF100) + 1756280 - enforce navigator.pdfViewerEnabled as true and plugins/mimeTypes as hard-coded values (FF100-115) 1692609 - reduce JS timing precision to 16.67ms (previously FF55+ was 100ms) (FF102) 1422237 - return "srgb" with color-gamut (FF110) 1794628 - return "none" with inverted-colors (FF114) + 1554751 - return devicePixelRatio as 2 (previously FF41+ was 1) (FF127) + 1787790 - normalize system fonts (FF128) + 1835987 - spoof timezone as Atlantic/Reykjavik (previously FF55+ was UTC) (FF128) ***/ user_pref("_user.js.parrot", "4500 syntax error: the parrot's popped 'is clogs"); -/* 4501: enable privacy.resistFingerprinting - * [SETUP-WEB] RFP can cause some website breakage: mainly canvas, use a site exception via the urlbar - * RFP also has a few side effects: mainly timezone is UTC0, and websites will prefer light theme +/* 4501: enable RFP * [NOTE] pbmode applies if true and the original pref is false - * [1] https://bugzilla.mozilla.org/418986 ***/ -user_pref("privacy.resistFingerprinting", true); // [FF41+] + * [SETUP-WEB] RFP can cause some website breakage: mainly canvas, use a canvas site exception via the urlbar. + * RFP also has a few side effects: mainly that timezone is GMT, and websites will prefer light theme ***/ + // user_pref("privacy.resistFingerprinting", true); // [FF41+] // user_pref("privacy.resistFingerprinting.pbmode", true); // [FF114+] -/* 4502: set new window size rounding max values [FF55+] +/* 4502: set RFP new window size max rounded values [FF55+] * [SETUP-CHROME] sizes round down in hundreds: width to 200s and height to 100s, to fit your screen * [1] https://bugzilla.mozilla.org/1330882 ***/ user_pref("privacy.window.maxInnerWidth", 1600); @@ -776,8 +832,8 @@ user_pref("privacy.window.maxInnerHeight", 900); /* 4503: disable mozAddonManager Web API [FF57+] * [NOTE] To allow extensions to work on AMO, you also need 2662 and 4505 * [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1384330,1406795,1415644,1453988 ***/ -user_pref("privacy.resistFingerprinting.block_mozAddonManager", true); // [HIDDEN PREF FF57-108] -/* 4504: enable RFP letterboxing [FF67+] +user_pref("privacy.resistFingerprinting.block_mozAddonManager", true); +/* 4504: enable letterboxing [FF67+] * Dynamically resizes the inner window by applying margins in stepped ranges [2] * If you use the dimension pref, then it will only apply those resolutions. * The format is "width1xheight1, width2xheight2, ..." (e.g. "800x600, 1000x1000") @@ -786,24 +842,19 @@ user_pref("privacy.resistFingerprinting.block_mozAddonManager", true); // [HIDDE * [WARNING] DO NOT USE: the dimension pref is only meant for testing * [1] https://bugzilla.mozilla.org/1407366 * [2] https://hg.mozilla.org/mozilla-central/rev/6d2d7856e468#l2.32 ***/ -user_pref("privacy.resistFingerprinting.letterboxing", true); // [HIDDEN PREF] + // user_pref("privacy.resistFingerprinting.letterboxing", true); // [HIDDEN PREF] // user_pref("privacy.resistFingerprinting.letterboxing.dimensions", ""); // [HIDDEN PREF] -/* 4505: experimental RFP [FF91+] - * List of domains exempted from RFP (comma-separated). - * [WARNING] DO NOT USE unless testing, see [1] comment 12 - * [1] https://bugzilla.mozilla.org/1635603 ***/ +/* 4505: disable RFP by domain (comma-separated) [FF91+] ***/ // user_pref("privacy.resistFingerprinting.exemptedDomains", "addons.thunderbird.net"); -/* 4506: set RFP's font visibility level (1402) [FF94+] ***/ - // user_pref("layout.css.font-visibility.resistFingerprinting", 1); // [DEFAULT: 1] +/* 4506: disable RFP spoof english prompt [FF59+] + * 0=prompt, 1=disabled, 2=enabled + * [NOTE] When changing from value 2, preferred languages ('intl.accept_languages') is not reset. + * [SETUP-WEB] when enabled, sets 'en-US, en' for displaying pages and 'en-US' as locale. + * [SETTING] General>Language>Choose your preferred language for displaying pages>Choose>Request English... ***/ +user_pref("privacy.spoof_english", 1); /* 4510: disable using system colors * [SETTING] General > Language and Appearance > Fonts and Colors > Colors... > Use system colors ***/ user_pref("browser.display.use_system_colors", false); // [DEFAULT: false NON-WINDOWS] -/* 4511: enforce non-native widget theme - * Security: removes/reduces system API calls, e.g. win32k API [1] - * Fingerprinting: provides a uniform look and feel across platforms [2] - * [1] https://bugzilla.mozilla.org/1381938 - * [2] https://bugzilla.mozilla.org/1411425 ***/ -user_pref("widget.non-native-theme.enabled", true); // [DEFAULT: true] /* 4512: enforce links targeting new windows to open in a new tab instead * 1=most recent window or tab, 2=new window, 3=new tab * Stops malicious window sizes and some screen resolution leaks. @@ -818,8 +869,7 @@ user_pref("browser.link.open_newwindow", 3); // [DEFAULT: 3] * [1] https://searchfox.org/mozilla-central/source/dom/tests/browser/browser_test_new_window_from_content.js * [2] https://searchfox.org/comm-esr102/source/mail/app/profile/all-thunderbird.js#730 ***/ user_pref("browser.link.open_newwindow.restriction", 0); -/* 4520: disable WebGL (Web Graphics Library) - * [SETUP-WEB] If you need it then override it. RFP still randomizes canvas for naive scripts ***/ +/* 4520: disable WebGL (Web Graphics Library) ***/ user_pref("webgl.disabled", true); /*** [SECTION 5000]: OPTIONAL OPSEC @@ -866,6 +916,26 @@ user_pref("browser.sessionstore.max_tabs_undo", 0); * Application data isolation [1] * [1] https://bugzilla.mozilla.org/1281959 ***/ // user_pref("browser.download.forbid_open_with", true); +/* 5010: disable location bar suggestion types ***/ +user_pref("browser.urlbar.suggest.history", false); +user_pref("browser.urlbar.suggest.bookmark", false); +user_pref("browser.urlbar.suggest.openpage", false); +user_pref("browser.urlbar.suggest.topsites", false); // [FF78+] +/* 5011: disable location bar dropdown + * This value controls the total number of entries to appear in the location bar dropdown ***/ +user_pref("browser.urlbar.maxRichResults", 0); +/* 5012: disable location bar autofill + * [1] https://support.mozilla.org/kb/address-bar-autocomplete-firefox#w_url-autocomplete ***/ +user_pref("browser.urlbar.autoFill", false); +/* 5013: disable browsing and download history + * [NOTE] We also clear history and downloads on exit (2811) + * [SETTING] Privacy & Security>History>Custom Settings>Remember browsing and download history ***/ +user_pref("places.history.enabled", false); +/* 5014: 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); /* 5013: disable browsing and download history * [NOTE] We also clear history and downloads on exit (2811) ***/ user_pref("places.history.enabled", false); @@ -876,8 +946,8 @@ user_pref("places.history.enabled", false); * If .supportedCountries includes your region (browser.search.region) and .supported * is "detect" (default), then the UI will show. Stored data is not secure, uses JSON * [1] https://wiki.mozilla.org/Firefox/Features/Form_Autofill ***/ - user_pref("extensions.formautofill.addresses.enabled", false); // [FF55+] - user_pref("extensions.formautofill.creditCards.enabled", false); // [FF56+] +user_pref("extensions.formautofill.addresses.enabled", false); // [FF55+] +user_pref("extensions.formautofill.creditCards.enabled", false); // [FF56+] /* 5018: limit events that can cause a pop-up ***/ user_pref("dom.popup_allowed_events", "click dblclick mousedown pointerdown"); /* 5019: disable page thumbnail collection ***/ @@ -911,7 +981,7 @@ user_pref("gfx.font_rendering.graphite.enabled", false); * [2] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=asm.js * [3] https://rh0dev.github.io/blog/2017/the-return-of-the-jit/ ***/ user_pref("javascript.options.asmjs", false); -/* 5505: disable Ion and baseline JIT to harden against JS exploits +/* 5505: disable Ion and baseline JIT to harden against JS exploits [RESTART] * [NOTE] When both Ion and JIT are disabled, and trustedprincipals * is enabled, then Ion can still be used by extensions (1599226) * [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=firefox+jit @@ -923,7 +993,7 @@ user_pref("javascript.options.jit_trustedprincipals", true); // [FF75+] [HIDDEN * Vulnerabilities [1] have increasingly been found, including those known and fixed * in native programs years ago [2]. WASM has powerful low-level access, making * certain attacks (brute-force) and vulnerabilities more possible - * [STATS] ~0.2% of websites, about half of which are for crytomining / malvertising [2][3] + * [STATS] ~0.2% of websites, about half of which are for cryptomining / malvertising [2][3] * [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=wasm * [2] https://spectrum.ieee.org/tech-talk/telecom/security/more-worries-over-the-security-of-web-assembly * [3] https://www.zdnet.com/article/half-of-the-websites-using-webassembly-use-it-for-malicious-purposes ***/ @@ -939,8 +1009,8 @@ user_pref("browser.eme.ui.enabled", false); /* 5509: disable IPv6 if using a VPN * This is an application level fallback. Disabling IPv6 is best done at an OS/network * level, and/or configured properly in system wide VPN setups. - * If you see PR_CONNECT_RESET_ERROR, this pref *might* be the cause * [NOTE] PHP defaults to IPv6 with "localhost". Use "php -S 127.0.0.1:PORT" + * [SETUP-WEB] PR_CONNECT_RESET_ERROR * [TEST] https://ipleak.org/ * [1] https://www.internetsociety.org/tag/ipv6-security/ (Myths 2,4,5,6) ***/ // user_pref("network.dns.disableIPv6", true); @@ -948,6 +1018,11 @@ user_pref("browser.eme.ui.enabled", false); * 0=always (default), 1=only if base domains match, 2=only if hosts match * [NOTE] Will cause breakage: older modems/routers and some sites e.g banks, vimeo, icloud, instagram ***/ user_pref("network.http.referer.XOriginPolicy", 2); +/* 5511: set DoH bootstrap address [FF89+] + * Thunderbird uses the system DNS to initially resolve the IP address of your DoH server. + * When set to a valid, working value that matches your "network.trr.uri" (0712) Thunderbird + * won't use the system DNS. If the IP doesn't match then DoH won't work ***/ + // user_pref("network.trr.bootstrapAddr", "10.0.0.1"); // [HIDDEN PREF] /* 5590: show a prompt when opening a link in external applications ***/ user_pref("security.external_protocol_requires_permission", true); @@ -967,10 +1042,10 @@ user_pref("security.dialog_enable_delay", 1000); // [DEFAULT: 1000] * [WARNING] Replaced with network partitioning (FF85+) and TCP (2701), and enabling FPI * disables those. FPI is no longer maintained except at Tor Project for Tor Browser's config ***/ user_pref("privacy.firstparty.isolate", false); // [DEFAULT: false] -/* 6009: enforce SmartBlock shims [FF81+] +/* 6009: enforce SmartBlock shims (about:compat) [FF81+] * In FF96+ these are listed in about:compat * [1] https://blog.mozilla.org/security/2021/03/23/introducing-smartblock/ ***/ -user_pref("extensions.webcompat.enable_shims", true); // [DEFAULT: true] +user_pref("extensions.webcompat.enable_shims", true); // [HIDDEN PREF] [DEFAULT: true] /* 6010: enforce no TLS 1.0/1.1 downgrades * [TEST] https://tls-v1-1.badssl.com:1010/ ***/ user_pref("security.tls.version.enable-deprecated", false); // [DEFAULT: false] @@ -981,21 +1056,16 @@ user_pref("extensions.webcompat-reporter.enabled", false); // [DEFAULT: false] /* 6012: enforce Quarantined Domains [FF115+] * [WHY] https://support.mozilla.org/kb/quarantined-domains */ user_pref("extensions.quarantinedDomains.enabled", true); // [DEFAULT: true] -/* 6050: prefsCleaner: reset previously active items removed from arkenfox FF102+ ***/ - // user_pref("beacon.enabled", ""); - // user_pref("browser.region.network.url", ""); - // user_pref("browser.region.update.enabled", ""); - // user_pref("browser.ssl_override_behavior", ""); - // user_pref("devtools.chrome.enabled", ""); - // user_pref("dom.disable_beforeunload", ""); - // user_pref("dom.disable_open_during_load", ""); - // user_pref("extensions.formautofill.available", ""); - // user_pref("extensions.formautofill.addresses.supported", ""); - // user_pref("extensions.formautofill.creditCards.available", ""); - // user_pref("extensions.formautofill.creditCards.supported", ""); - // user_pref("middlemouse.contentLoadURL", ""); -/* 6051: prefsCleaner: reset previously active items removed from arkenfox FF115+ ***/ +/* 6050: prefsCleaner: previously active items removed from arkenfox 115-127 ***/ + // user_pref("accessibility.force_disabled", ""); + // user_pref("browser.urlbar.dnsResolveSingleWordsAfterSearch", ""); + // user_pref("geo.provider.network.url", ""); + // user_pref("geo.provider.network.logging.enabled", ""); + // user_pref("geo.provider.use_gpsd", ""); // user_pref("network.protocol-handler.external.ms-windows-store", ""); + // user_pref("privacy.partition.always_partition_third_party_non_cookie_storage", ""); + // user_pref("privacy.partition.always_partition_third_party_non_cookie_storage.exempt_sessionstorage", ""); + // user_pref("privacy.partition.serviceWorkers", ""); /*** [SECTION 7000]: DON'T BOTHER Thunderbird-User.JS maintainer here : @@ -1012,8 +1082,8 @@ user_pref("full-screen-api.enabled", false); /* 7003: disable non-modern cipher suites [1] * [WHY] Passive fingerprinting. Minimal/non-existent threat of downgrade attacks * [1] https://browserleaks.com/ssl ***/ - // user_pref("security.ssl3.ecdhe_ecdsa_aes_256_sha", false); // [DEFAULT: false FF109+] - // user_pref("security.ssl3.ecdhe_ecdsa_aes_128_sha", false); // [DEFAULT: false FF109+] + // user_pref("security.ssl3.ecdhe_ecdsa_aes_256_sha", false); + // user_pref("security.ssl3.ecdhe_ecdsa_aes_128_sha", false); // user_pref("security.ssl3.ecdhe_rsa_aes_128_sha", false); // user_pref("security.ssl3.ecdhe_rsa_aes_256_sha", false); // user_pref("security.ssl3.rsa_aes_128_gcm_sha256", false); // no PFS @@ -1065,12 +1135,14 @@ user_pref("dom.event.clipboardevents.enabled", false); * [WHY] DNT is enforced with Tracking Protection which is used in ETP Strict (2701) ***/ // user_pref("privacy.donottrackheader.enabled", true); /* 7016: customize ETP settings + * [NOTE] FPP (fingerprintingProtection) is ignored when RFP (4501) is enabled * [WHY] Arkenfox only supports strict (2701) which sets these at runtime ***/ - // user_pref("network.cookie.cookieBehavior", 5); // [DEFAULT: 5 FF103+] + // user_pref("network.cookie.cookieBehavior", 5); // [DEFAULT: 5] + // user_pref("privacy.fingerprintingProtection", true); // [FF114+] [ETP FF119+] // user_pref("network.http.referer.disallowCrossSiteRelaxingDefault", true); // user_pref("network.http.referer.disallowCrossSiteRelaxingDefault.top_navigation", true); // [FF100+] - // user_pref("privacy.partition.network_state.ocsp_cache", true); - // user_pref("privacy.query_stripping.enabled", true); // [FF101+] [ETP FF102+] + // user_pref("privacy.partition.network_state.ocsp_cache", true); // [DEFAULT: true FF123+] + // user_pref("privacy.query_stripping.enabled", true); // [FF101+] // user_pref("privacy.trackingprotection.enabled", true); // user_pref("privacy.trackingprotection.socialtracking.enabled", true); // user_pref("privacy.trackingprotection.cryptomining.enabled", true); // [DEFAULT: true] @@ -1078,13 +1150,12 @@ user_pref("dom.event.clipboardevents.enabled", false); /* 7017: disable service workers * [WHY] Already isolated with TCP (2701) behind a pref (2710) ***/ // user_pref("dom.serviceWorkers.enabled", false); -/* 7018: disable Web Notifications +/* 7018: disable Web Notifications [FF22+] * [WHY] Web Notifications are behind a prompt (7002) * [1] https://blog.mozilla.org/en/products/firefox/block-notification-requests/ ***/ - // user_pref("dom.webnotifications.enabled", false); // [FF22+] - // user_pref("dom.webnotifications.serviceworker.enabled", false); // [FF44+] + // user_pref("dom.webnotifications.enabled", false); /* 7019: disable Push Notifications [FF44+] - * [WHY] Push requires subscription + * [WHY] Website "push" requires subscription, and the API is required for CRLite (1224) * [NOTE] To remove all subscriptions, reset "dom.push.userAgentID" * [1] https://support.mozilla.org/kb/push-notifications-firefox ***/ // user_pref("dom.push.enabled", false); @@ -1095,6 +1166,10 @@ user_pref("dom.event.clipboardevents.enabled", false); * [1] https://groups.google.com/g/discuss-webrtc/c/6stQXi72BEU/m/2FwZd24UAQAJ * [2] https://datatracker.ietf.org/doc/html/draft-ietf-mmusic-mdns-ice-candidates#section-3.1.1 ***/ user_pref("media.peerconnection.enabled", false); +/* 7021: enable GPC (Global Privacy Control) in non-PB windows + * [WHY] Passive and active fingerprinting. Mostly redundant with Tracking Protection + * in ETP Strict (2701) and sanitizing on close (2800s) ***/ + // user_pref("privacy.globalprivacycontrol.enabled", true); /*** [SECTION 8000]: DON'T BOTHER: FINGERPRINTING [WHY] They are insufficient to help anti-fingerprinting and do more harm than good @@ -1129,7 +1204,10 @@ user_pref("_user.js.parrot", "8000 syntax error: the parrot's crossed the Jordan /*** [SECTION 9000]: NON-PROJECT RELATED ***/ user_pref("_user.js.parrot", "9000 syntax error: the parrot's cashed in 'is chips!"); /* 9001: disable welcome notices ***/ -user_pref("browser.startup.homepage_override.mstone", "ignore"); +user_pref("browser.startup.homepage_override.mstone", "ignore"); // [HIDDEN PREF] +/* 9002: disable extensions/features recommendations as you browse [FF67+] ***/ +user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons", false); +user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features", false); /* 9090: disable return receipt sending unconditionally ***/ // user_pref("mail.mdn.report.enabled", false); /* 9099: e-mail custom headers (examples) ***/ @@ -1268,6 +1346,8 @@ user_pref("mail.sanitize_date_header", true); /* 9210: Check spelling before sending * [1] https://bugzilla.mozilla.org/show_bug.cgi?id=667133 ***/ // user_pref("mail.SpellCheckBeforeSend", false); +/* 9211: Set dictionary to US ***/ +user_pref("spellchecker.dictionary", "en-US"); /* 9212: Compose email in plaintext unless expressly overridden * Sometimes HTML is useful especially when used with Markdown Here * [SETTING] Account Settings > Composition & Addressing > Composition > Compose messages in HTML format @@ -1455,39 +1535,71 @@ user_pref("_user.js.parrot", "9400 syntax error: this parrot is talking in codes * [1] https://wiki.mozilla.org/Thunderbird:OpenPGP:Smartcards#Allow_the_use_of_external_GnuPG ***/ user_pref("mail.openpgp.allow_external_gnupg", true); // [HIDDEN PREF] -/*** [SECTION 9999]: DEPRECATED / REMOVED / LEGACY / RENAMED - Documentation denoted as [-]. Items deprecated prior to FF91 have been archived at [1] - [1] https://github.com/arkenfox/user.js/issues/123 -***/ +/*** [SECTION 9999]: DEPRECATED / RENAMED ***/ user_pref("_user.js.parrot", "9999 syntax error: the parrot's shuffled off 'is mortal coil!"); -/* ESR102.x still uses all the following prefs +/* ESR115.x still uses all the following prefs // [NOTE] replace the * with a slash in the line above to re-enable active ones -// FF103 -// 2801: delete cookies and site data on exit - replaced by sanitizeOnShutdown* (2810) - // 0=keep until they expire (default), 2=keep until you close Thunderbird - // [-] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1681493,1681495,1681498,1759665,1764761 -user_pref("network.cookie.lifetimePolicy", 2); -// 6012: disable SHA-1 certificates - // [-] https://bugzilla.mozilla.org/1766687 - // user_pref("security.pki.sha1_enforcement_level", 1); // [DEFAULT: 1] -// FF114 -// 2816: set cache to clear on exit [FF96+] - // [NOTE] We already disable disk cache (1001) and clear on exit (2811) which is more robust - // [1] https://bugzilla.mozilla.org/1671182 - // [-] https://bugzilla.mozilla.org/1821651 - // user_pref("privacy.clearsitedata.cache.enabled", true); -// 4505: experimental RFP [FF91+] - // [-] https://bugzilla.mozilla.org/1824235 - // user_pref("privacy.resistFingerprinting.testGranularityMask", 0); -// 5017: disable Form Autofill heuristics - // Heuristics controls Form Autofill on forms without @autocomplete attributes - // [-] https://bugzilla.mozilla.org/1829670 - // user_pref("extensions.formautofill.heuristics.enabled", false); // [FF55+] -// FF115 - // 7001: disable offline cache (appCache) - // [NOTE] appCache storage capability was removed in FF90 - // [-] https://bugzilla.mozilla.org/1677718 - // user_pref("browser.cache.offline.enable", false); +// FF116 +// 4506: set RFP's font visibility level (1402) [FF94+] + // [-] https://bugzilla.mozilla.org/1838415 + // user_pref("layout.css.font-visibility.resistFingerprinting", 1); // [DEFAULT: 1] +// FF117 +// 1221: disable Windows 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://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/21686 + // [-] https://bugzilla.mozilla.org/1844908 +user_pref("security.family_safety.mode", 0); +// 7018: disable service worker Web Notifications [FF44+] + // [WHY] Web Notifications are behind a prompt (7002) + // [1] https://blog.mozilla.org/en/products/firefox/block-notification-requests/ + // [-] https://bugzilla.mozilla.org/1842457 + // user_pref("dom.webnotifications.serviceworker.enabled", false); +// FF118 +// 1402: limit font visibility (Windows, Mac, some Linux) [FF94+] + // Uses hardcoded lists with two parts: kBaseFonts + kLangPackFonts [1], bundled fonts are auto-allowed + // In normal windows: uses the first applicable: RFP over TP over Standard + // In Private Browsing windows: uses the most restrictive between normal and private + // 1=only base system fonts, 2=also fonts from optional language packs, 3=also user-installed fonts + // [1] https://searchfox.org/mozilla-central/search?path=StandardFonts*.inc + // [-] https://bugzilla.mozilla.org/1847599 + // user_pref("layout.css.font-visibility.private", 1); + // user_pref("layout.css.font-visibility.standard", 1); + // user_pref("layout.css.font-visibility.trackingprotection", 1); +// 2623: disable permissions delegation [FF73+] + // Currently applies to cross-origin geolocation, camera, mic and screen-sharing + // permissions, and fullscreen requests. Disabling delegation means any prompts + // for these will show/use their correct 3rd party origin + // [1] https://groups.google.com/forum/#!topic/mozilla.dev.platform/BdFOMAuCGW8/discussion + // [-] https://bugzilla.mozilla.org/1697151 + // user_pref("permissions.delegation.enabled", false); +// FF119 +// 0211: use en-US locale regardless of the system or region locale + // [SETUP-WEB] May break some input methods e.g xim/ibus for CJK languages [1] + // [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=867501,1629630 + // [-] https://bugzilla.mozilla.org/1846224 + // user_pref("javascript.use_us_english_locale", true); // [HIDDEN PREF] +// FF123 +// 0334: disable PingCentre telemetry (used in several System Add-ons) [FF57+] + // Defense-in-depth: currently covered by 0331 + // [-] https://bugzilla.mozilla.org/1868988 +user_pref("browser.ping-centre.telemetry", false); +// FF126 +// 9003: disable What's New toolbar icon [FF69+] + // [-] https://bugzilla.mozilla.org/1724300 +user_pref("browser.messaging-system.whatsNewPanel.enabled", false); +// FF127 + // 2630: disable content analysis by DLP (Data Loss Prevention) agents - replaced by default_result + // [-] https://bugzilla.mozilla.org/1880314 +user_pref("browser.contentanalysis.default_allow", false); +// 4511: enforce non-native widget theme + // Security: removes/reduces system API calls, e.g. win32k API [1] + // Fingerprinting: provides a uniform look and feel across platforms [2] + // [1] https://bugzilla.mozilla.org/1381938 + // [2] https://bugzilla.mozilla.org/1411425 + // [-] https://bugzilla.mozilla.org/1848899 +user_pref("widget.non-native-theme.enabled", true); // [DEFAULT: true] // ***/ /* END: internal custom pref to test for syntax errors ***/