diff --git a/modules/firefox.nix b/modules/firefox.nix index 3c66c7d..790c8b1 100644 --- a/modules/firefox.nix +++ b/modules/firefox.nix @@ -100,8 +100,925 @@ DisableProfileImport = true; }; - programs.firefox.preferences = { - "sidebar.revamp" = true; - "sidebar.verticalTabs" = true; - }; + programs.firefox.autoConfig = '' + // mostly from arkenfox + // at commit: https://github.com/arkenfox/user.js/blob/eae5762d29f18115fbffd73d89bd9e2510b25427/user.js + + lockPref("sidebar.revamp", true); + lockPref("sidebar.verticalTabs", true); + + /*** [SECTION 0100]: STARTUP ***/ + /* 0105: disable sponsored content on Firefox Home (Activity Stream + * [SETTING] Home>Firefox Home Content ***/ + lockPref("browser.newtabpage.activity-stream.showSponsored", false); // [FF58+] + lockPref("browser.newtabpage.activity-stream.showSponsoredTopSites", false); // [FF83+] Shortcuts>Sponsored shortcuts + /* 0106: clear default topsites + * [NOTE] This does not block you from adding your own ***/ + lockPref("browser.newtabpage.activity-stream.default.sites", ""); + + /*** [SECTION 0200]: GEOLOCATION ***/ + /* 0202: disable using the geolocation service ***/ + lockPref("geo.enabled", false); + + /*** [SECTION 0300]: QUIETER FOX ***/ + /** RECOMMENDATIONS ***/ + /* 0320: disable recommendation pane in about:addons (uses Google Analytics ***/ + lockPref("extensions.getAddons.showPane", false); // [HIDDEN PREF] + /* 0321: disable recommendations in about:addons' Extensions and Themes panes [FF68+] ***/ + lockPref("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 + * [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to make personalized extension recommendations + * [1] https://support.mozilla.org/kb/personalized-extension-recommendations ***/ + lockPref("browser.discovery.enabled", false); + /* 0323: disable shopping experience [FF116+] + * [1] https://bugzilla.mozilla.org/show_bug.cgi?id=1840156//c0 ***/ + lockPref("browser.shopping.experience2023.enabled", false); // [DEFAULT: false] + + /** TELEMETRY ***/ + /* 0330: disable new data submission [FF41+] + * If disabled, no policy is shown or upload takes place, ever + * [1] https://bugzilla.mozilla.org/1195552 ***/ + lockPref("datareporting.policy.dataSubmissionEnabled", false); + /* 0331: disable Health Reports + * [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to send technical... data ***/ + lockPref("datareporting.healthreport.uploadEnabled", false); + /* 0332: disable telemetry + * ThelockPref("unified" pref affects the behavior of the "enabled" pref + * - IflockPref("unified" is false then "enabled" controls the telemetry module + * - IflockPref("unified" is true then "enabled" only controls whether to record extended data + * [NOTE]lockPref("toolkit.telemetry.enabled" is now LOCKED to reflect prerelease (true or release builds (false) [2] + * [1] https://firefox-source-docs.mozilla.org/toolkit/components/telemetry/telemetry/internals/preferences.html + * [2] https://medium.com/georg-fritzsche/data-preference-changes-in-firefox-58-2d5df9c428b5 ***/ + lockPref("toolkit.telemetry.unified", false); + lockPref("toolkit.telemetry.enabled", false); // see [NOTE] + lockPref("toolkit.telemetry.server", "data:,"); + lockPref("toolkit.telemetry.archive.enabled", false); + lockPref("toolkit.telemetry.newProfilePing.enabled", false); // [FF55+] + lockPref("toolkit.telemetry.shutdownPingSender.enabled", false); // [FF55+] + lockPref("toolkit.telemetry.updatePing.enabled", false); // [FF56+] + lockPref("toolkit.telemetry.bhrPing.enabled", false); // [FF57+] Background Hang Reporter + lockPref("toolkit.telemetry.firstShutdownPing.enabled", false); // [FF57+] + /* 0333: disable Telemetry Coverage + * [1] https://blog.mozilla.org/data/2018/08/20/effectively-measuring-search-in-firefox/ ***/ + lockPref("toolkit.telemetry.coverage.opt-out", true); // [HIDDEN PREF] + lockPref("toolkit.coverage.opt-out", true); // [FF64+] [HIDDEN PREF] + lockPref("toolkit.coverage.endpoint.base", ""); + /* 0335: disable Firefox Home (Activity Stream telemetry ***/ + lockPref("browser.newtabpage.activity-stream.feeds.telemetry", false); + lockPref("browser.newtabpage.activity-stream.telemetry", false); + + /** STUDIES ***/ + /* 0340: disable Studies + * [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to install and run studies ***/ + lockPref("app.shield.optoutstudies.enabled", false); + /* 0341: disable Normandy/Shield [FF60+] + * Shield is a telemetry system that can push and testlockPref("recipes" + * [1] https://mozilla.github.io/normandy/ ***/ + lockPref("app.normandy.enabled", false); + lockPref("app.normandy.api_url", ""); + + /** CRASH REPORTS ***/ + /* 0350: disable Crash Reports ***/ + lockPref("breakpad.reportURL", ""); + lockPref("browser.tabs.crashReporting.sendReport", false); // [FF44+] + //lockPref("browser.crashReports.unsubmittedCheck.enabled", false);# [FF51+] [DEFAULT: false] + /* 0351: enforce no submission of backlogged Crash Reports [FF58+] + * [SETTING] Privacy & Security>Firefox Data Collection & Use>Allow Firefox to send backlogged crash reports ***/ + lockPref("browser.crashReports.unsubmittedCheck.autoSubmit2", false); // [DEFAULT: false] + + /** OTHER ***/ + /* 0360: disable Captive Portal detection + * [1] https://www.eff.org/deeplinks/2017/08/how-captive-portals-interfere-wireless-security-and-privacy ***/ + lockPref("captivedetect.canonicalURL", ""); + lockPref("network.captive-portal-service.enabled", false); // [FF52+] + /* 0361: disable Network Connectivity checks [FF65+] + * [1] https://bugzilla.mozilla.org/1460537 ***/ + lockPref("network.connectivity-service.enabled", false); + + /*** [SECTION 0400]: SAFE BROWSING (SB + SB has taken many steps to preserve privacy. If required, a full url is never sent + to Google, only a part-hash of the prefix, hidden with noise of other real part-hashes. + Firefox takes measures such as stripping out identifying parameters and since SBv4 (FF57+ + doesn't even use cookies. (//Turn on browser.safebrowsing.debug to monitor this activity + + [1] https://feeding.cloud.geek.nz/posts/how-safe-browsing-works-in-firefox/ + [2] https://wiki.mozilla.org/Security/Safe_Browsing + [3] https://support.mozilla.org/kb/how-does-phishing-and-malware-protection-work + [4] https://educatedguesswork.org/posts/safe-browsing-privacy/ + ***/ + /* 0401: disable SB (Safe Browsing + * [WARNING] Do this at your own risk! These are the master switches + * [SETTING] Privacy & Security>Security>... Block dangerous and deceptive content ***/ + //lockPref("browser.safebrowsing.malware.enabled", false); + //lockPref("browser.safebrowsing.phishing.enabled", false); + /* 0402: disable SB checks for downloads (both local lookups + remote + * This is the master switch for the safebrowsing.downloads* prefs (0403, 0404 + * [SETTING] Privacy & Security>Security>...lockPref("Block dangerous downloads" ***/ + //lockPref("browser.safebrowsing.downloads.enabled", false); + /* 0403: disable SB checks for downloads (remote + * To verify the safety of certain executable files, Firefox may submit some information about the + * file, including the name, origin, size and a cryptographic hash of the contents, to the Google + * Safe Browsing service which helps Firefox determine whether or not the file should be blocked + * [SETUP-SECURITY] If you do not understand this, or you want this protection, then override this ***/ + lockPref("browser.safebrowsing.downloads.remote.enabled", false); + //lockPref("browser.safebrowsing.downloads.remote.url", "");# Defense-in-depth + /* 0404: disable SB checks for unwanted software + * [SETTING] Privacy & Security>Security>...lockPref("Warn you about unwanted and uncommon software" ***/ + //lockPref("browser.safebrowsing.downloads.remote.block_potentially_unwanted", false); + //lockPref("browser.safebrowsing.downloads.remote.block_uncommon", false); + /* 0405: disablelockPref("ignore this warning" on SB warnings [FF45+] + * If clicked, it bypasses the block for that session. This is a means for admins to enforce SB + * [TEST] see https://github.com/arkenfox/user.js/wiki/Appendix-A-Test-Sites//-mozilla + * [1] https://bugzilla.mozilla.org/1226490 ***/ + //lockPref("browser.safebrowsing.allowOverride", false); + + /*** [SECTION 0600]: BLOCK IMPLICIT OUTBOUND [not explicitly asked for - e.g. clicked on] ***/ + /* 0601: disable link prefetching + * [1] https://developer.mozilla.org/docs/Web/HTTP/Link_prefetching_FAQ ***/ + lockPref("network.prefetch-next", false); + /* 0602: disable DNS prefetching + * [1] https://developer.mozilla.org/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control ***/ + lockPref("network.dns.disablePrefetch", true); + lockPref("network.dns.disablePrefetchFromHTTPS", true); + /* 0603: disable predictor / prefetching ***/ + lockPref("network.predictor.enabled", false); + lockPref("network.predictor.enable-prefetch", false); // [FF48+] [DEFAULT: false] + /* 0604: disable link-mouseover opening connection to linked server + * [1] https://news.slashdot.org/story/15/08/14/2321202/how-to-quash-firefoxs-silent-requests ***/ + lockPref("network.http.speculative-parallel-limit", 0); + /* 0605: disable mousedown speculative connections on bookmarks and history [FF98+] ***/ + lockPref("browser.places.speculativeConnect.enabled", false); + /* 0610: enforce nolockPref("Hyperlink Auditing" (click tracking + * [1] https://www.bleepingcomputer.com/news/software/major-browsers-to-prevent-disabling-of-click-tracking-privacy-risk/ ***/ + //lockPref("browser.send_pings", false);# [DEFAULT: false] + + /*** [SECTION 0800]: LOCATION BAR / SEARCH BAR / SUGGESTIONS / HISTORY / FORMS ***/ + /* 0801: disable location bar making speculative connections [FF56+] + * [1] https://bugzilla.mozilla.org/1348275 ***/ + lockPref("browser.urlbar.speculativeConnect.enabled", false); + /* 0802: disable location bar contextual suggestions + * [NOTE] The UI is controlled by the .enabled pref + * [SETTING] Search>Address Bar>Suggestions from... + * [1] https://blog.mozilla.org/data/2021/09/15/data-and-firefox-suggest/ ***/ + lockPref("browser.urlbar.quicksuggest.enabled", false); // [FF92+] + lockPref("browser.urlbar.suggest.quicksuggest.nonsponsored", false); // [FF95+] + lockPref("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 these if you trust and use a privacy respecting search engine + * [SETTING] Search>Show search suggestions | Show search suggestions in address bar results ***/ + lockPref("browser.search.suggest.enabled", false); + lockPref("browser.urlbar.suggest.searches", false); + /* 0805: disable urlbar trending search suggestions [FF118+] + * [SETTING] Search>Search Suggestions>Show trending search suggestions (FF119 ***/ + lockPref("browser.urlbar.trending.featureGate", false); + /* 0806: disable urlbar suggestions ***/ + lockPref("browser.urlbar.addons.featureGate", false); // [FF115+] + lockPref("browser.urlbar.mdn.featureGate", false); // [FF117+] [HIDDEN PREF] + lockPref("browser.urlbar.pocket.featureGate", false); // [FF116+] [DEFAULT: false] + lockPref("browser.urlbar.weather.featureGate", false); // [FF108+] [DEFAULT: false] + lockPref("browser.urlbar.yelp.featureGate", false); // [FF124+] [DEFAULT: false] + /* 0807: disable urlbar clipboard suggestions [FF118+] ***/ + //lockPref("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 ***/ + //lockPref("browser.urlbar.recentsearches.featureGate", false); + /* 0810: disable search and form history + * [NOTE] We also clear formdata on exit (2811 + * [SETUP-WEB] Be aware that autocomplete form data can be read by third parties [1][2] + * [SETTING] Privacy & Security>History>Custom Settings>Remember search and form history + * [1] https://blog.mindedsecurity.com/2011/10/autocompleteagain.html + * [2] https://bugzilla.mozilla.org/381681 ***/ + lockPref("browser.formfill.enable", false); + /* 0815: disable tab-to-search [FF85+] + * Alternatively, you can exclude on a per-engine basis by unchecking them in Options>Search + * [SETTING] Search>Address Bar>When using the address bar, suggest>Search engines ***/ + //lockPref("browser.urlbar.suggest.engines", false); + /* 0820: disable coloring of visited links + * [SETUP-HARDEN] 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 + * attacks. Don't forget clearing history on exit (2811. However, social engineering [2//limits][4][5] + * and advanced targeted timing attacks could still produce usable results + * [1] https://developer.mozilla.org/docs/Web/CSS/Privacy_and_the_:visited_selector + * [2] https://dbaron.org/mozilla/visited-privacy + * [3] https://bugzilla.mozilla.org/1632765 + * [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 ***/ + //lockPref("layout.css.visited_links_enabled", false); + + /*** [SECTION 1000]: DISK AVOIDANCE ***/ + /* 1001: disable disk cache + * [NOTE] We also clear cache on exit (2811 + * [SETUP-CHROME] If you think disk cache helps perf, then feel free to override this ***/ + //"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 ***/ + lockPref("browser.privatebrowsing.forceMediaMemoryCache", true); // [FF75+] + lockPref("media.memory_cache_max_size", 65536); + /* 1003: disable storing extra session data [SETUP-CHROME] + * define on which sites to save extra session data such as form content, cookies and POST data + * 0=everywhere, 1=unencrypted sites, 2=nowhere ***/ + lockPref("browser.sessionstore.privacy_level", 2); + + /*** [SECTION 1200]: HTTPS (SSL/TLS / OCSP / CERTS / HPKP + Your cipher and other settings can be used in server side fingerprinting + [TEST] https://www.ssllabs.com/ssltest/viewMyClient.html + [TEST] https://browserleaks.com/ssl + [TEST] https://ja3er.com/ + [1] https://www.securityartwork.es/2017/02/02/tls-client-fingerprinting-with-bro/ + ***/ + /** SSL (Secure Sockets Layer / TLS (Transport Layer Security) ***/ + /* 1201: require safe negotiation + * Blocks connections to servers that don't support RFC 5746 [2] as they're potentially vulnerable to a + * MiTM attack [3]. A server without RFC 5746 can be safe from the attack if it disables renegotiations + * 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 (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 + * [4] https://www.ssllabs.com/ssl-pulse/ ***/ + lockPref("security.ssl.require_safe_negotiation", true); + /* 1206: disable TLS1.3 0-RTT (round-trip time [FF51+] + * This data is not forward secret, as it is encrypted solely under keys derived using + * the offered PSK. There are no guarantees of non-replay between connections + * [1] https://github.com/tlswg/tls13-spec/issues/1001 + * [2] https://www.rfc-editor.org/rfc/rfc9001.html//name-replay-attacks-with-0-rtt + * [3] https://blog.cloudflare.com/tls-1-3-overview-and-q-and-a/ ***/ + lockPref("security.tls.enable_0rtt_data", false); + + /** OCSP (Online Certificate Status Protocol + [1] https://scotthelme.co.uk/revocation-is-broken/ + [2] https://blog.mozilla.org/security/2013/07/29/ocsp-stapling-in-firefox/ + ***/ + /* 1211: enforce 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 + * [SETTING] Privacy & Security>Security>Certificates>Query OCSP responder servers... + * [1] https://en.wikipedia.org/wiki/Ocsp ***/ + lockPref("security.OCSP.enabled", 1); // [DEFAULT: 1] + /* 1212: set OCSP fetch failures (non-stapled, see 1211 to hard-fail + * [SETUP-WEB] SEC_ERROR_OCSP_SERVER_ERROR + * 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 ***/ + lockPref("security.OCSP.require", true); + + /** CERTS / HPKP (HTTP Public Key Pinning ***/ + /* 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 ***/ + lockPref("security.cert_pinning.enforcement_level", 2); + /* 1224: enable CRLite [FF73+] + * 0, disabled + * 1, consult CRLite but only collect telemetry + * 2, consult CRLite and enforce bothlockPref("Revoked" and "Not Revoked" results + * 3, consult CRLite and enforcelockPref("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/ ***/ + lockPref("security.remote_settings.crlite_filters.enabled", true); + lockPref("security.pki.crlite_mode", 2); + + /** MIXED CONTENT ***/ + /* 1241: disable insecure passive content (such as images on https pages ***/ + //lockPref("security.mixed_content.block_display_content", true);# Defense-in-depth (see 1244) + /* 1244: enable HTTPS-Only mode in all windows + * When the top-level is HTTPS, insecure subresources are also upgraded (silent fail + * [SETTING] to add site exceptions: Padlock>HTTPS-Only mode>On (afterlockPref("Continue to HTTP Site" + * [SETTING] Privacy & Security>HTTPS-Only Mode (and manage exceptions + * [TEST] http://example.com [upgrade] + * [TEST] http://httpforever.com/ | http://http.rip [no upgrade] ***/ + lockPref("dom.security.https_only_mode", true); // [FF76+] + //lockPref("dom.security.https_only_mode_pbm", true);# [FF80+] + /* 1245: enable HTTPS-Only mode for local resources [FF77+] ***/ + //lockPref("dom.security.https_only_mode.upgrade_local", true); + /* 1246: disable HTTP background requests [FF82+] + * When attempting to upgrade, if the server doesn't respond within 3 seconds, Firefox sends + * a top-level HTTP request without path in order to check if the server supports HTTPS or not + * This is done to avoid waiting for a timeout which takes 90 seconds + * [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1642387,1660945 ***/ + //"dom.security.https_only_mode_send_http_background_request", false); + + /** UI (User Interface ***/ + /* 1270: display warning on the padlock forlockPref("broken security" (if 1201 is false + * Bug: warning padlock not indicated for subresources on a secure page! [2] + * [1] https://wiki.mozilla.org/Security:Renegotiation + * [2] https://bugzilla.mozilla.org/1353705 ***/ + lockPref("security.ssl.treat_unsafe_negotiation_as_broken", true); + /* 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/ ***/ + lockPref("browser.xul.error_pages.expert_bad_cert", true); + + /*** [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 + scheme+host+port: https://example.com:8888 + [1] https://feeding.cloud.geek.nz/posts/tweaking-referrer-for-privacy-in-firefox/ + ***/ + /* 1602: control the amount of cross-origin information to send [FF52+] + * 0=send full URI (default, 1=scheme+host+port+path, 2=scheme+host+port ***/ + lockPref("network.http.referer.XOriginTrimmingPolicy", 2); + + /*** [SECTION 2000]: PLUGINS / MEDIA / WEBRTC ***/ + /* 2002: force WebRTC inside the proxy [FF70+] ***/ + lockPref("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/docs/Web/API/RTCIceCandidate + * [2] https://wiki.mozilla.org/Media/WebRTC/Privacy ***/ + lockPref("media.peerconnection.ice.default_address_only", true); + /* 2004: force exclusion of private IPs from ICE candidates [FF51+] + * [SETUP-HARDEN] This will protect your private IP even in TRUSTED scenarios after you + * grant device access, but often results in breakage on video-conferencing platforms ***/ + //lockPref("media.peerconnection.ice.no_host", true); + /* 2020: disable GMP (Gecko Media Plugins + * [1] https://wiki.mozilla.org/GeckoMediaPlugins ***/ + //lockPref("media.gmp-provider.enabled", false); + + /*** [SECTION 2400]: DOM (DOCUMENT OBJECT MODEL ***/ + /* 2402: prevent scripts from moving and resizing open windows ***/ + lockPref("dom.disable_window_move_resize", true); + + /*** [SECTION 2600]: MISCELLANEOUS ***/ + /* 2603: remove temp files opened from non-PB windows with an external application + * [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=302433,1738574 ***/ + lockPref("browser.download.start_downloads_in_tmp_dir", true); // [FF102+] + lockPref("browser.helperApps.deleteTempFileOnExit", true); + /* 2606: disable UITour backend so there is no chance that a remote page can use it ***/ + lockPref("browser.uitour.enabled", false); + //lockPref("browser.uitour.url", "");# Defense-in-depth + /* 2608: reset remote debugging to disabled + * [1] https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/16222 ***/ + lockPref("devtools.debugger.remote-enabled", false); // [DEFAULT: false] + /* 2615: disable websites overriding Firefox's keyboard shortcuts [FF58+] + * 0 (default or 1=allow, 2=block + * [SETTING] to add site exceptions: Ctrl+I>Permissions>Override Keyboard Shortcuts ***/ + lockPref("permissions.default.shortcuts", 2); + /* 2616: remove special permissions for certain mozilla domains [FF35+] + * [1] resource://app/defaults/permissions ***/ + lockPref("permissions.manager.defaultsUrl", ""); + /* 2617: remove webchannel whitelist ***/ + lockPref("webchannel.allowObject.urlWhitelist", ""); + /* 2619: use Punycode in Internationalized Domain Names to eliminate possible spoofing + * [SETUP-WEB] Might be undesirable for non-latin alphabet users since legitimate IDN's are also punycoded + * [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] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=punycode+firefox + * [4] https://www.xudongz.com/blog/2017/idn-phishing/ ***/ + lockPref("network.IDN_show_punycode", true); + /* 2620: enforce PDFJS, disable PDFJS scripting + * This setting controls if the optionlockPref("Display in Firefox" is available in the setting below + * and by effect controls whether PDFs are handled in-browser or externally ("Ask" orlockPref("Open With" + * [WHY] pdfjs is lightweight, open source, and secure: the last exploit was June 2015 [1] + * It doesn't breaklockPref("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. + * [NOTE] JS can still force a pdf to open in-browser by bundling its own code + * [SETUP-CHROME] You may prefer a different pdf reader for security/workflow reasons + * [SETTING] General>Applications>Portable Document Format (PDF + * [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=pdf.js+firefox ***/ + lockPref("pdfjs.disabled", false); // [DEFAULT: false] + lockPref("pdfjs.enableScripting", false); // [FF86+] + /* 2624: disable middle click on new tab button opening URLs or searches using clipboard [FF115+] */ + //"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 */ + lockPref("browser.contentanalysis.enabled", false); // [FF121+] [DEFAULT: false] + lockPref("browser.contentanalysis.default_result", 0); // [FF127+] [DEFAULT: 0] + + /** EXTENSIONS ***/ + /* 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 ***/ + lockPref("extensions.enabledScopes", 5); // [HIDDEN PREF] + //lockPref("extensions.autoDisableScopes", 15);# [DEFAULT: 15] + /* 2661: disable bypassing 3rd party extension install prompts [FF82+] + * [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1659530,1681331 ***/ + lockPref("extensions.postDownloadThirdPartyPrompt", false); + /* 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 ***/ + //lockPref("extensions.webextensions.restrictedDomains", ""); + + /*** [SECTION 2700]: ETP (ENHANCED TRACKING PROTECTION ***/ + /* 2701: enable ETP Strict Mode [FF86+] + * ETP Strict Mode enables Total Cookie Protection (TCP + * [NOTE] Adding site exceptions disables all ETP protections for that site and increases the risk of + * cross-site state tracking e.g. exceptions for SiteA and SiteB means PartyC on both sites is shared + * [1] https://blog.mozilla.org/security/2021/02/23/total-cookie-protection/ + * [SETTING] to add site exceptions: Urlbar>ETP Shield + * [SETTING] to manage site exceptions: Options>Privacy & Security>Enhanced Tracking Protection>Manage Exceptions ***/ + lockPref("browser.contentblocking.category", "strict"); // [HIDDEN PREF] + /* 2702: disable ETP web compat features [FF93+] + * [SETUP-HARDEN] Includes skip lists, heuristics (SmartBlock and automatic grants + * 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/docs/Web/Privacy/State_Partitioning//storage_access_heuristics ***/ + //lockPref("privacy.antitracking.enableWebcompat", false); + + /** SANITIZE MANUAL: TIMERANGE ***/ + /* 2840: setlockPref("Time range to clear" for "Clear Data" (2820 and "Clear History" (2830) + * 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 + * [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 ***/ + lockPref("privacy.sanitize.timeSpan", 0); + + /*** [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+ + ***/ + /* 4001: enable FPP in PB mode [FF114+] + * [NOTE] In FF119+, FPP for all modes (7016 is enabled with ETP Strict (2701) ***/ + lockPref("privacy.fingerprintingProtection.pbmode", true); // [DEFAULT: true FF118+] + /* 4002: set global FPP overrides [FF114+] + * useslockPref("RFPTargets" [1] which despite the name these are not used by RFP + * e.g.lockPref("+AllTargets,-CSSPrefersColorScheme,-JSDateTimeUTC" = all targets but allow prefers-color-scheme and do not change timezone + * e.g.lockPref("-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 + * [1] https://searchfox.org/mozilla-central/source/toolkit/components/resistfingerprinting/RFPTargets.inc ***/ + //lockPref("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 ***/ + //lockPref("privacy.fingerprintingProtection.granularOverrides", ""); + /* 4004: disable remote FPP overrides [FF127+] ***/ + //lockPref("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 + 1360039 - spoof navigator.hardwareConcurrency as 2 (FF55 + FF56 + 1333651 - spoof User Agent & Navigator API + 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 + 1337161 - hide gamepads from content + 1372072 - spoof network information API aslockPref("unknown" when dom.netinfo.enabled, true + 1333641 - reduce fingerprinting in WebSpeech API + FF57 + 1369309 - spoof media statistics + 1382499 - reduce screen co-ordinate fingerprinting in Touch API + 1217290 & 1409677 - enable some fingerprinting resistance for WebGL + 1354633 - limit MediaError.message to a whitelist + FF58+ + 1372073 - spoof/block fingerprinting in MediaDevices API (FF59 + Spoof: enumerate devices as onelockPref("Internal Camera" and one "Internal Microphone" + Block: suppresses the ondevicechange event + 1039069 - warn when language prefs are not set tolockPref("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. + 1337157 - disable WebGL debug renderer info (FF60 + 1459089 - disable OS locale in HTTP Accept-Language headers (ANDROID (FF62) + 1479239 - returnlockPref("no-preference" with prefers-reduced-motion (FF63 + 1363508 - spoof/suppress Pointer Events (FF64 + 1492766 - spoof pointerEvent.pointerid (FF65 + 1485266 - disable exposure of system colors to CSS or canvas (FF67 + 1494034 - returnlockPref("light" with prefers-color-scheme (FF67 + 1564422 - spoof audioContext outputLatency (FF70 + 1595823 - return audioContext sampleRate as 44100 (FF72 + 1607316 - spoof pointer as coarse and hover as none (ANDROID (FF74) + 1621433 - randomize canvas (previously FF58+ returned an all-white canvas (FF78) + 1506364 - returnlockPref("no-preference" with prefers-contrast (FF80 + 1653987 - limit font visibility to bundled andlockPref("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 (FF100-115 + 1692609 - reduce JS timing precision to 16.67ms (previously FF55+ was 100ms (FF102) + 1422237 - returnlockPref("srgb" with color-gamut (FF110 + 1794628 - returnlockPref("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) + ***/ + /* 4501: enable RFP + * [NOTE] pbmode applies if true and the original pref is false + * [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 ***/ + lockPref("privacy.resistFingerprinting", true);// [FF41+] + lockPref("privacy.resistFingerprinting.pbmode", true);// [FF114+] + /* 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 ***/ + lockPref("privacy.window.maxInnerWidth", 1600); + lockPref("privacy.window.maxInnerHeight", 900); + /* 4503: disable mozAddonManager Web API [FF57+] + * [NOTE] To allow extensions to work on AMO, you also need 2662 + * [1] https://bugzilla.mozilla.org/buglist.cgi?bug_id=1384330,1406795,1415644,1453988 ***/ + lockPref("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 islockPref("width1xheight1, width2xheight2, ..." (e.g. "800x600, 1000x1000" + * [SETUP-WEB] This is independent of RFP (4501. If you're not using RFP, or you are but + * dislike the margins, then flip this pref, keeping in mind that it is effectively fingerprintable + * [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 ***/ + lockPref("privacy.resistFingerprinting.letterboxing", true);// [HIDDEN PREF] + //lockPref("privacy.resistFingerprinting.letterboxing.dimensions", "");# [HIDDEN PREF] + /* 4505: disable RFP by domain [FF91+] ***/ + //lockPref("privacy.resistFingerprinting.exemptedDomains", "*.example.invalid"); + /* 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... ***/ + //"privacy.spoof_english", 1); + /* 4510: disable using system colors + * [SETTING] General>Language and Appearance>Fonts and Colors>Colors>Use system colors ***/ + lockPref("browser.display.use_system_colors", false); // [DEFAULT: false NON-WINDOWS] + /* 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. + * You can still right-click a link and open in a new window + * [SETTING] General>Tabs>Open links in tabs instead of new windows + * [TEST] https://arkenfox.github.io/TZP/tzp.html//screen + * [1] https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/9881 ***/ + lockPref("browser.link.open_newwindow", 3); // [DEFAULT: 3] + /* 4513: set all open window methods to abide bylockPref("browser.link.open_newwindow" (4512 + * [1] https://searchfox.org/mozilla-central/source/dom/tests/browser/browser_test_new_window_from_content.js ***/ + lockPref("browser.link.open_newwindow.restriction", 0); + /* 4520: disable WebGL (Web Graphics Library ***/ + lockPref("webgl.disabled", true); + + /*** [SECTION 5000]: OPTIONAL OPSEC + Disk avoidance, application data isolation, eyeballs... + ***/ + /* 5001: start Firefox in PB (Private Browsing mode + * [NOTE] In this mode all windows arelockPref("private windows" and the PB mode icon is not displayed + * [NOTE] The P in PB mode can be misleading: it means nolockPref("persistent" disk state such as history, + * caches, searches, cookies, localStorage, IndexedDB etc (which you can achieve in normal mode. + * In fact, PB mode limits or removes the ability to control some of these, and you need to quit + * Firefox to clear them. PB is best used as a one off window (Menu>New Private Window to provide + * a temporary self-contained new session. Close all private windows to clear the PB session. + * [SETTING] Privacy & Security>History>Custom Settings>Always use private browsing mode + * [1] https://wiki.mozilla.org/Private_Browsing + * [2] https://support.mozilla.org/kb/common-myths-about-private-browsing ***/ + //lockPref("browser.privatebrowsing.autostart", true); + /* 5002: disable memory cache + * capacity: -1=determine dynamically (default, 0=none, n=memory capacity in kibibytes ***/ + //lockPref("browser.cache.memory.enable", false); + //lockPref("browser.cache.memory.capacity", 0); + /* 5003: disable saving passwords + * [NOTE] This does not clear any passwords already saved + * [SETTING] Privacy & Security>Logins and Passwords>Ask to save logins and passwords for websites ***/ + //lockPref("signon.rememberSignons", false); + /* 5004: disable permissions manager from writing to disk [FF41+] [RESTART] + * [NOTE] This means any permission changes are session only + * [1] https://bugzilla.mozilla.org/967812 ***/ + lockPref("permissions.memory_only", true);// [HIDDEN PREF] + /* 5005: disable intermediate certificate caching [FF41+] [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 ***/ + //lockPref("security.nocertdb", true); + /* 5006: disable favicons in history and bookmarks + * [NOTE] Stored as data blobs in favicons.sqlite, these don't reveal anything that your + * actual history (and bookmarks already do. Your history is more detailed, so + * control that instead); e.g. disable history, clear history on exit, use PB mode + * [NOTE] favicons.sqlite is sanitized on Firefox close ***/ + //lockPref("browser.chrome.site_icons", false); + /* 5007: excludelockPref("Undo Closed Tabs" in Session Restore ***/ + //lockPref("browser.sessionstore.max_tabs_undo", 0); + /* 5008: disable resuming session from crash + * [TEST] about:crashparent ***/ + lockPref("browser.sessionstore.resume_from_crash", false); + /* 5009: disablelockPref("open with" in download dialog [FF50+] + * Application data isolation [1] + * [1] https://bugzilla.mozilla.org/1281959 ***/ + lockPref("browser.download.forbid_open_with", true); + /* 5010: disable location bar suggestion types + * [SETTING] Search>Address Bar>When using the address bar, suggest ***/ + lockPref("browser.urlbar.suggest.history", false); + //lockPref("browser.urlbar.suggest.bookmark", false); + //lockPref("browser.urlbar.suggest.openpage", false); + //lockPref("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 ***/ + //lockPref("browser.urlbar.maxRichResults", 0); + /* 5012: disable location bar autofill + * [1] https://support.mozilla.org/kb/address-bar-autocomplete-firefox//w_url-autocomplete ***/ + //lockPref("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 ***/ + lockPref("places.history.enabled", false); + /* 5014: disable Windows jumplist [WINDOWS] ***/ + //lockPref("browser.taskbar.lists.enabled", false); + //lockPref("browser.taskbar.lists.frequent.enabled", false); + //lockPref("browser.taskbar.lists.recent.enabled", false); + //lockPref("browser.taskbar.lists.tasks.enabled", false); + /* 5016: discourage downloading to desktop + * 0=desktop, 1=downloads (default, 2=custom + * [SETTING] To set your custom defaultlockPref("downloads": General>Downloads>Save files to ***/ + //lockPref("browser.download.folderList", 2); + /* 5017: disable Form Autofill + * If .supportedCountries includes your region (browser.search.region and .supported + * islockPref("detect" (default, then the UI will show. Stored data is not secure, uses JSON + * [SETTING] Privacy & Security>Forms and Autofill>Autofill addresses + * [1] https://wiki.mozilla.org/Firefox/Features/Form_Autofill ***/ + //lockPref("extensions.formautofill.addresses.enabled", false);# [FF55+] + //lockPref("extensions.formautofill.creditCards.enabled", false);# [FF56+] + /* 5018: limit events that can cause a pop-up ***/ + //lockPref("dom.popup_allowed_events", "click dblclick mousedown pointerdown"); + /* 5019: disable page thumbnail collection ***/ + //lockPref("browser.pagethumbnails.capturing_disabled", true);# [HIDDEN PREF] + /* 5020: disable Windows native notifications and use app notications instead [FF111+] [WINDOWS] ***/ + //lockPref("alerts.useSystemBackend.windows.notificationserver.enabled", false); + /* 5021: disable location bar using search + * Don't leak URL typos to a search engine, give an error message instead + * Examples:lockPref("secretplace,com", "secretplace/com", "secretplace com", "secret place.com" + * [NOTE] This does not affect explicit user action such as using search buttons in the + * dropdown, or using keyword search shortcuts you configure in options (e.g.lockPref("d" for DuckDuckGo ***/ + //lockPref("keyword.enabled", false); + + /*** [SECTION 5500]: OPTIONAL HARDENING + Not recommended. Overriding these can cause breakage and performance issues, + they are mostly fingerprintable, and the threat model is practically nonexistent + ***/ + /* 5501: disable MathML (Mathematical Markup Language [FF51+] + * [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=mathml ***/ + //lockPref("mathml.disabled", true);# 1173199 + /* 5502: disable in-content SVG (Scalable Vector Graphics [FF53+] + * [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=firefox+svg ***/ + //lockPref("svg.disabled", true);# 1216893 + /* 5503: disable graphite + * [1] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=firefox+graphite + * [2] https://en.wikipedia.org/wiki/Graphite_(SIL ***/ + //lockPref("gfx.font_rendering.graphite.enabled", false); + /* 5504: disable asm.js [FF22+] + * [1] http://asmjs.org/ + * [2] https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=asm.js + * [3] https://rh0dev.github.io/blog/2017/the-return-of-the-jit/ ***/ + //lockPref("javascript.options.asmjs", false); + /* 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 + * [2] https://microsoftedge.github.io/edgevr/posts/Super-Duper-Secure-Mode/ ***/ + //lockPref("javascript.options.ion", false); + //lockPref("javascript.options.baselinejit", false); + //lockPref("javascript.options.jit_trustedprincipals", true);# [FF75+] [HIDDEN PREF] + /* 5506: disable WebAssembly [FF52+] + * 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 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 ***/ + lockPref("javascript.options.wasm", false); + /* 5507: disable rendering of SVG OpenType fonts ***/ + //lockPref("gfx.font_rendering.opentype_svg.enabled", false); + /* 5508: disable all DRM content (EME: Encryption Media Extension + * Optionally hide the UI setting which also disables the DRM prompt + * [SETTING] General>DRM Content>Play DRM-controlled content + * [TEST] https://bitmovin.com/demos/drm + * [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 ***/ + //lockPref("media.eme.enabled", false); + //lockPref("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. + * [NOTE] PHP defaults to IPv6 withlockPref("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 ***/ + //lockPref("network.dns.disableIPv6", true); + /* 5510: control when to send a cross-origin referer + * 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 ***/ + //lockPref("network.http.referer.XOriginPolicy", 2); + /* 5511: set DoH bootstrap address [FF89+] + * Firefox uses the system DNS to initially resolve the IP address of your DoH server. + * When set to a valid, working value that matches yourlockPref("network.trr.uri" (0712 Firefox + * won't use the system DNS. If the IP doesn't match then DoH won't work ***/ + //lockPref("network.trr.bootstrapAddr", "10.0.0.1");# [HIDDEN PREF] + + /*** [SECTION 6000]: DON'T TOUCH ***/ + /* 6001: enforce Firefox blocklist + * [WHY] It includes updates forlockPref("revoked certificates" + * [1] https://blog.mozilla.org/security/2015/03/03/revoking-intermediate-certificates-introducing-onecrl/ ***/ + lockPref("extensions.blocklist.enabled", true); // [DEFAULT: true] + /* 6002: enforce no referer spoofing + * [WHY] Spoofing can affect CSRF (Cross-Site Request Forgery protections ***/ + lockPref("network.http.referer.spoofSource", false); // [DEFAULT: false] + /* 6004: enforce a security delay on some confirmation dialogs such as install, open/save + * [1] https://www.squarefree.com/2004/07/01/race-conditions-in-security-dialogs/ ***/ + lockPref("security.dialog_enable_delay", 1000); // [DEFAULT: 1000] + /* 6008: enforce no First Party Isolation [FF51+] + * [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 ***/ + lockPref("privacy.firstparty.isolate", false); // [DEFAULT: false] + /* 6009: enforce SmartBlock shims (about:compat [FF81+] + * [1] https://blog.mozilla.org/security/2021/03/23/introducing-smartblock/ ***/ + lockPref("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/ ***/ + lockPref("security.tls.version.enable-deprecated", false); // [DEFAULT: false] + /* 6011: enforce disabling of Web Compatibility Reporter [FF56+] + * Web Compatibility Reporter adds alockPref("Report Site Issue" button to send data to Mozilla + * [WHY] To prevent wasting Mozilla's time with a custom setup ***/ + lockPref("extensions.webcompat-reporter.enabled", false); // [DEFAULT: false] + /* 6012: enforce Quarantined Domains [FF115+] + * [WHY] https://support.mozilla.org/kb/quarantined-domains */ + lockPref("extensions.quarantinedDomains.enabled", true); // [DEFAULT: true] + /* 6050: prefsCleaner: previously active items removed from arkenfox 115-127 ***/ + //lockPref("accessibility.force_disabled", ""); + //lockPref("browser.urlbar.dnsResolveSingleWordsAfterSearch", ""); + //lockPref("geo.provider.network.url", ""); + //lockPref("geo.provider.network.logging.enabled", ""); + //lockPref("geo.provider.use_gpsd", ""); + //lockPref("network.protocol-handler.external.ms-windows-store", ""); + //lockPref("privacy.partition.always_partition_third_party_non_cookie_storage", ""); + //lockPref("privacy.partition.always_partition_third_party_non_cookie_storage.exempt_sessionstorage", ""); + //lockPref("privacy.partition.serviceWorkers", ""); + + /*** [SECTION 7000]: DON'T BOTHER ***/ + /* 7001: disable APIs + * Location-Aware Browsing, Full Screen + * [WHY] The API state is easily fingerprintable. + * Geo is behind a prompt (7002. Full screen requires user interaction ***/ + //lockPref("geo.enabled", false); + //lockPref("full-screen-api.enabled", false); + /* 7002: set default permissions + * Location, Camera, Microphone, Notifications [FF58+] Virtual Reality [FF73+] + * 0=always ask (default, 1=allow, 2=block + * [WHY] These are fingerprintable via Permissions API, except VR. Just add site + * exceptions as allow/block for frequently visited/annoying sites: i.e. not global + * [SETTING] to add site exceptions: Ctrl+I>Permissions> + * [SETTING] to manage site exceptions: Options>Privacy & Security>Permissions>Settings ***/ + //lockPref("permissions.default.geo", 0); + //lockPref("permissions.default.camera", 0); + //lockPref("permissions.default.microphone", 0); + //lockPref("permissions.default.desktop-notification", 0); + //lockPref("permissions.default.xr", 0);# Virtual Reality + /* 7003: disable non-modern cipher suites [1] + * [WHY] Passive fingerprinting. Minimal/non-existent threat of downgrade attacks + * [1] https://browserleaks.com/ssl ***/ + //lockPref("security.ssl3.ecdhe_ecdsa_aes_128_sha", false); + //lockPref("security.ssl3.ecdhe_ecdsa_aes_256_sha", false); + //lockPref("security.ssl3.ecdhe_rsa_aes_128_sha", false); + //lockPref("security.ssl3.ecdhe_rsa_aes_256_sha", false); + //lockPref("security.ssl3.rsa_aes_128_gcm_sha256", false);# no PFS + //lockPref("security.ssl3.rsa_aes_256_gcm_sha384", false);# no PFS + //lockPref("security.ssl3.rsa_aes_128_sha", false);# no PFS + //lockPref("security.ssl3.rsa_aes_256_sha", false);# no PFS + /* 7004: control TLS versions + * [WHY] Passive fingerprinting and security ***/ + //lockPref("security.tls.version.min", 3);# [DEFAULT: 3] + //lockPref("security.tls.version.max", 4); + /* 7005: disable SSL session IDs [FF36+] + * [WHY] Passive fingerprinting and perf costs. These are session-only + * and isolated with network partitioning (FF85+ and/or containers ***/ + //lockPref("security.ssl.disable_session_identifiers", true); + /* 7006: onions + * [WHY] Firefox doesn't support hidden services. Use Tor Browser ***/ + //lockPref("dom.securecontext.allowlist_onions", true);# [FF97+] 1382359/1744006 + //lockPref("network.http.referer.hideOnionSource", true);# 1305144 + /* 7007: referers + * [WHY] Only cross-origin referers (1602, 5510 matter ***/ + //lockPref("network.http.sendRefererHeader", 2); + //lockPref("network.http.referer.trimmingPolicy", 0); + /* 7008: set the default Referrer Policy [FF59+] + * 0=no-referer, 1=same-origin, 2=strict-origin-when-cross-origin, 3=no-referrer-when-downgrade + * [WHY] Defaults are fine. They can be overridden by a site-controlled Referrer Policy ***/ + //lockPref("network.http.referer.defaultPolicy", 2);# [DEFAULT: 2] + //lockPref("network.http.referer.defaultPolicy.pbmode", 2);# [DEFAULT: 2] + /* 7010: disable HTTP Alternative Services [FF37+] + * [WHY] Already isolated with network partitioning (FF85+ ***/ + //lockPref("network.http.altsvc.enabled", false); + /* 7011: disable website control over browser right-click context menu + * [WHY] Just use Shift-Right-Click ***/ + //lockPref("dom.event.contextmenu.enabled", false); + /* 7012: disable icon fonts (glyphs and local fallback rendering + * [WHY] Breakage, font fallback is equivalency, also RFP + * [1] https://bugzilla.mozilla.org/789788 + * [2] https://gitlab.torproject.org/legacy/trac/-/issues/8455 ***/ + //lockPref("gfx.downloadable_fonts.enabled", false);# [FF41+] + //lockPref("gfx.downloadable_fonts.fallback_delay", -1); + /* 7013: disable Clipboard API + * [WHY] Fingerprintable. Breakage. Cut/copy/paste require user + * interaction, and paste is limited to focused editable fields ***/ + //lockPref("dom.event.clipboardevents.enabled", false); + /* 7014: disable System Add-on updates + * [WHY] It can compromise security. System addons ship with prefs, use those ***/ + //lockPref("extensions.systemAddon.update.enabled", false);# [FF62+] + //lockPref("extensions.systemAddon.update.url", "");# [FF44+] + /* 7015: enable the DNT (Do Not Track HTTP header + * [WHY] DNT is enforced with Tracking Protection which is used in ETP Strict (2701 ***/ + //lockPref("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 ***/ + //lockPref("network.cookie.cookieBehavior", 5);# [DEFAULT: 5] + //lockPref("privacy.fingerprintingProtection", true);# [FF114+] [ETP FF119+] + //lockPref("network.http.referer.disallowCrossSiteRelaxingDefault", true); + //lockPref("network.http.referer.disallowCrossSiteRelaxingDefault.top_navigation", true);# [FF100+] + //lockPref("privacy.partition.network_state.ocsp_cache", true);# [DEFAULT: true FF123+] + //lockPref("privacy.query_stripping.enabled", true);# [FF101+] + //lockPref("privacy.trackingprotection.enabled", true); + //lockPref("privacy.trackingprotection.socialtracking.enabled", true); + //lockPref("privacy.trackingprotection.cryptomining.enabled", true);# [DEFAULT: true] + //lockPref("privacy.trackingprotection.fingerprinting.enabled", true);# [DEFAULT: true] + /* 7017: disable service workers + * [WHY] Already isolated with TCP (2701 behind a pref (2710) ***/ + //lockPref("dom.serviceWorkers.enabled", false); + /* 7018: disable Web Notifications [FF22+] + * [WHY] Web Notifications are behind a prompt (7002 + * [1] https://blog.mozilla.org/en/products/firefox/block-notification-requests/ ***/ + //lockPref("dom.webnotifications.enabled", false); + /* 7019: disable Push Notifications [FF44+] + * [WHY] WebsitelockPref("push" requires subscription, and the API is required for CRLite (1224 + * [NOTE] To remove all subscriptions, resetlockPref("dom.push.userAgentID" + * [1] https://support.mozilla.org/kb/push-notifications-firefox ***/ + //lockPref("dom.push.enabled", false); + /* 7020: disable WebRTC (Web Real-Time Communication + * [WHY] Firefox desktop uses mDNS hostname obfuscation and the private IP is never exposed until + * required in TRUSTED scenarios); i.e. after you grant device (microphone or camera access + * [TEST] https://browserleaks.com/webrtc + * [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 ***/ + //lockPref("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) ***/ + //lockPref("privacy.globalprivacycontrol.enabled", true); + + /*** [SECTION 8000]: DON'T BOTHER: FINGERPRINTING + [WHY] They are insufficient to help anti-fingerprinting and do more harm than good + [WARNING] DO NOT USE with RFP. RFP already covers these and they can interfere + ***/ + /* 8001: prefsCleaner: reset items useless for anti-fingerprinting ***/ + //lockPref("browser.display.use_document_fonts", ""); + //lockPref("browser.zoom.siteSpecific", ""); + //lockPref("device.sensors.enabled", ""); + //lockPref("dom.enable_performance", ""); + //lockPref("dom.enable_resource_timing", ""); + //lockPref("dom.gamepad.enabled", ""); + //lockPref("dom.maxHardwareConcurrency", ""); + //lockPref("dom.w3c_touch_events.enabled", ""); + //lockPref("dom.webaudio.enabled", ""); + //lockPref("font.system.whitelist", ""); + //lockPref("general.appname.override", ""); + //lockPref("general.appversion.override", ""); + //lockPref("general.buildID.override", ""); + //lockPref("general.oscpu.override", ""); + //lockPref("general.platform.override", ""); + //lockPref("general.useragent.override", ""); + //lockPref("media.navigator.enabled", ""); + //lockPref("media.ondevicechange.enabled", ""); + //lockPref("media.video_stats.enabled", ""); + //lockPref("media.webspeech.synth.enabled", ""); + //lockPref("ui.use_standins_for_native_colors", ""); + //lockPref("webgl.enable-debug-renderer-info", ""); + + /*** [SECTION 9000]: NON-PROJECT RELATED ***/ + /* 9001: disable welcome notices ***/ + lockPref("browser.startup.homepage_override.mstone", "ignore"); // [HIDDEN PREF] + /* 9002: disable General>Browsing>Recommend extensions/features as you browse [FF67+] ***/ + lockPref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons", false); + lockPref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features", false); + /* 9004: disable search terms [FF110+] + * [SETTING] Search>Search Bar>Use the address bar for search and navigation>Show search terms instead of URL... ***/ + lockPref("browser.urlbar.showSearchTerms.enabled", false); + ''; }