commit df6d152a9028587d83b8c4b0926b948aa751a0df
parent 5d7b54ff4396ad905a80448b7ba46185ce57b248
Author: Jacob R. Edwards <n/a>
Date: Sat, 7 Jan 2023 14:49:27 -0800
Add firefox module
This defines a Firefox profile using Pyllyukko's user.js with a few
of my own changes appended to the end.
The changes I made mostly amount to making the urlbar a url-bar
instead of a bookmarks-history-tabs-suggestions-and-url-bar and
using the slimmer UI.
Pyllyukko's user.js can be read about here:
<https://github.com/pyllyukko/user.js>
Diffstat:
3 files changed, 1277 insertions(+), 0 deletions(-)
diff --git a/local/Makefile b/local/Makefile
@@ -3,6 +3,7 @@ dest = ${HOME}
mods =\
ap\
awk\
+ firefox\
bin\
buf\
dillo\
diff --git a/local/firefox/.mozilla/firefox/profiles.ini b/local/firefox/.mozilla/firefox/profiles.ini
@@ -0,0 +1,10 @@
+[Profile0]
+Name=hardened
+IsRelative=1
+Path=profiles
+Default=1
+
+[General]
+StartWithLastProfile=1
+Version=2
+
diff --git a/local/firefox/.mozilla/firefox/profiles/user.js b/local/firefox/.mozilla/firefox/profiles/user.js
@@ -0,0 +1,1266 @@
+/*
+ * Firefox user.js
+ *
+ * This Pyllyukko's user.js with some settings being overridden or
+ * added at the bottom by myself (Jacob Edwards) under the
+ * "Jacob's Additions" section.
+ *
+ * I'd rather not have such a big ugly configuration file, but I
+ * hope to trim it down in the future somehow. (Ideally though,
+ * user.js would support including other files so Pyllyukko's user.js
+ * could be in a separate file from my own adjustments.)
+ */
+
+//
+/******************************************************************************
+ * user.js *
+ * https://github.com/pyllyukko/user.js *
+ ******************************************************************************/
+
+/******************************************************************************
+ * SECTION: HTML5 / APIs / DOM *
+ ******************************************************************************/
+
+// PREF: Disable Service Workers
+// https://developer.mozilla.org/en-US/docs/Web/API/Worker
+// https://developer.mozilla.org/en-US/docs/Web/API/ServiceWorker_API
+// https://wiki.mozilla.org/Firefox/Push_Notifications#Service_Workers
+// NOTICE: Disabling ServiceWorkers breaks functionality on some sites (Google Street View...)
+// NOTICE: Disabling ServiceWorkers breaks Firefox Sync
+// Unknown security implications
+// CVE-2016-5259, CVE-2016-2812, CVE-2016-1949, CVE-2016-5287 (fixed)
+user_pref("dom.serviceWorkers.enabled", false);
+
+// PREF: Disable web notifications
+// https://support.mozilla.org/en-US/questions/1140439
+user_pref("dom.webnotifications.enabled", false);
+
+// PREF: Disable DOM timing API
+// https://wiki.mozilla.org/Security/Reviews/Firefox/NavigationTimingAPI
+// https://www.w3.org/TR/navigation-timing/#privacy
+user_pref("dom.enable_performance", false);
+
+// PREF: Disable resource timing API
+// https://www.w3.org/TR/resource-timing/#privacy-security
+// NOTICE: Disabling resource timing API breaks some DDoS protection pages (Cloudflare)
+user_pref("dom.enable_resource_timing", false);
+
+// PREF: Make sure the User Timing API does not provide a new high resolution timestamp
+// https://trac.torproject.org/projects/tor/ticket/16336
+// https://www.w3.org/TR/2013/REC-user-timing-20131212/#privacy-security
+user_pref("dom.enable_user_timing", false);
+
+// PREF: Disable Web Audio API
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1288359
+// NOTICE: Web Audio API is required for Unity web player/games
+user_pref("dom.webaudio.enabled", false);
+
+// PREF: Disable Location-Aware Browsing (geolocation)
+// https://www.mozilla.org/en-US/firefox/geolocation/
+user_pref("geo.enabled", false);
+
+// PREF: When geolocation is enabled, use Mozilla geolocation service instead of Google
+// https://bugzilla.mozilla.org/show_bug.cgi?id=689252
+user_pref("geo.wifi.uri", "https://location.services.mozilla.com/v1/geolocate?key=%MOZILLA_API_KEY%");
+
+// PREF: When geolocation is enabled, don't log geolocation requests to the console
+user_pref("geo.wifi.logging.enabled", false);
+
+// PREF: Disable raw TCP socket support (mozTCPSocket)
+// https://trac.torproject.org/projects/tor/ticket/18863
+// https://www.mozilla.org/en-US/security/advisories/mfsa2015-97/
+// https://developer.mozilla.org/docs/Mozilla/B2G_OS/API/TCPSocket
+user_pref("dom.mozTCPSocket.enabled", false);
+
+// PREF: Disable DOM storage (disabled)
+// http://kb.mozillazine.org/Dom.storage.enabled
+// https://html.spec.whatwg.org/multipage/webstorage.html
+// NOTICE-DISABLED: Disabling DOM storage is known to cause`TypeError: localStorage is null` errors
+//user_pref("dom.storage.enabled", false);
+
+// PREF: Disable leaking network/browser connection information via Javascript
+// Network Information API provides general information about the system's connection type (WiFi, cellular, etc.)
+// https://developer.mozilla.org/en-US/docs/Web/API/Network_Information_API
+// https://wicg.github.io/netinfo/#privacy-considerations
+// https://bugzilla.mozilla.org/show_bug.cgi?id=960426
+user_pref("dom.netinfo.enabled", false);
+
+// PREF: Disable network API (Firefox < 32)
+// https://developer.mozilla.org/en-US/docs/Web/API/Connection/onchange
+// https://www.torproject.org/projects/torbrowser/design/#fingerprinting-defenses
+user_pref("dom.network.enabled", false);
+
+// PREF: Disable WebRTC entirely to prevent leaking internal IP addresses (Firefox < 42)
+// NOTICE: Disabling WebRTC breaks peer-to-peer file sharing tools (reep.io ...)
+user_pref("media.peerconnection.enabled", false);
+
+// PREF: Don't reveal your internal IP when WebRTC is enabled (Firefox >= 42)
+// https://wiki.mozilla.org/Media/WebRTC/Privacy
+// https://github.com/beefproject/beef/wiki/Module%3A-Get-Internal-IP-WebRTC
+user_pref("media.peerconnection.ice.default_address_only", true); // Firefox 42-51
+user_pref("media.peerconnection.ice.no_host", true); // Firefox >= 52
+
+// PREF: Disable WebRTC getUserMedia, screen sharing, audio capture, video capture
+// https://wiki.mozilla.org/Media/getUserMedia
+// https://blog.mozilla.org/futurereleases/2013/01/12/capture-local-camera-and-microphone-streams-with-getusermedia-now-enabled-in-firefox/
+// https://developer.mozilla.org/en-US/docs/Web/API/Navigator
+user_pref("media.navigator.enabled", false);
+user_pref("media.navigator.video.enabled", false);
+user_pref("media.getusermedia.screensharing.enabled", false);
+user_pref("media.getusermedia.audiocapture.enabled", false);
+
+// PREF: Disable battery API (Firefox < 52)
+// https://developer.mozilla.org/en-US/docs/Web/API/BatteryManager
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1313580
+user_pref("dom.battery.enabled", false);
+
+// PREF: Disable telephony API
+// https://wiki.mozilla.org/WebAPI/Security/WebTelephony
+user_pref("dom.telephony.enabled", false);
+
+// PREF: Disable "beacon" asynchronous HTTP transfers (used for analytics)
+// https://developer.mozilla.org/en-US/docs/Web/API/navigator.sendBeacon
+user_pref("beacon.enabled", false);
+
+// PREF: Disable clipboard event detection (onCut/onCopy/onPaste) via Javascript
+// NOTICE: Disabling clipboard events breaks Ctrl+C/X/V copy/cut/paste functionaility in JS-based web applications (Google Docs...)
+// https://developer.mozilla.org/en-US/docs/Mozilla/Preferences/Preference_reference/dom.event.clipboardevents.enabled
+user_pref("dom.event.clipboardevents.enabled", false);
+
+// PREF: Disable "copy to clipboard" functionality via Javascript (Firefox >= 41)
+// NOTICE: Disabling clipboard operations will break legitimate JS-based "copy to clipboard" functionality
+// https://hg.mozilla.org/mozilla-central/rev/2f9f8ea4b9c3
+user_pref("dom.allow_cut_copy", false);
+
+// PREF: Disable speech recognition
+// https://dvcs.w3.org/hg/speech-api/raw-file/tip/speechapi.html
+// https://developer.mozilla.org/en-US/docs/Web/API/SpeechRecognition
+// https://wiki.mozilla.org/HTML5_Speech_API
+user_pref("media.webspeech.recognition.enable", false);
+
+// PREF: Disable speech synthesis
+// https://developer.mozilla.org/en-US/docs/Web/API/SpeechSynthesis
+user_pref("media.webspeech.synth.enabled", false);
+
+// PREF: Disable sensor API
+// https://wiki.mozilla.org/Sensor_API
+user_pref("device.sensors.enabled", false);
+
+// PREF: Disable pinging URIs specified in HTML <a> ping= attributes
+// http://kb.mozillazine.org/Browser.send_pings
+user_pref("browser.send_pings", false);
+
+// PREF: When browser pings are enabled, only allow pinging the same host as the origin page
+// http://kb.mozillazine.org/Browser.send_pings.require_same_host
+user_pref("browser.send_pings.require_same_host", true);
+
+// PREF: Disable IndexedDB (disabled)
+// https://developer.mozilla.org/en-US/docs/IndexedDB
+// https://en.wikipedia.org/wiki/Indexed_Database_API
+// https://wiki.mozilla.org/Security/Reviews/Firefox4/IndexedDB_Security_Review
+// http://forums.mozillazine.org/viewtopic.php?p=13842047
+// https://github.com/pyllyukko/user.js/issues/8
+// NOTICE-DISABLED: IndexedDB could be used for tracking purposes, but is required for some add-ons to work (notably uBlock), so is left enabled
+//user_pref("dom.indexedDB.enabled", false);
+
+// TODO: "Access Your Location" "Maintain Offline Storage" "Show Notifications"
+
+// PREF: Disable gamepad API to prevent USB device enumeration
+// https://www.w3.org/TR/gamepad/
+// https://trac.torproject.org/projects/tor/ticket/13023
+user_pref("dom.gamepad.enabled", false);
+
+// PREF: Disable virtual reality devices APIs
+// https://developer.mozilla.org/en-US/Firefox/Releases/36#Interfaces.2FAPIs.2FDOM
+// https://developer.mozilla.org/en-US/docs/Web/API/WebVR_API
+user_pref("dom.vr.enabled", false);
+
+// PREF: Disable vibrator API
+user_pref("dom.vibrator.enabled", false);
+
+// PREF: Disable Archive API (Firefox < 54)
+// https://wiki.mozilla.org/WebAPI/ArchiveAPI
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1342361
+user_pref("dom.archivereader.enabled", false);
+
+// PREF: Disable webGL
+// https://en.wikipedia.org/wiki/WebGL
+// https://www.contextis.com/resources/blog/webgl-new-dimension-browser-exploitation/
+user_pref("webgl.disabled", true);
+// PREF: When webGL is enabled, use the minimum capability mode
+user_pref("webgl.min_capability_mode", true);
+// PREF: When webGL is enabled, disable webGL extensions
+// https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API#WebGL_debugging_and_testing
+user_pref("webgl.disable-extensions", true);
+// PREF: When webGL is enabled, force enabling it even when layer acceleration is not supported
+// https://trac.torproject.org/projects/tor/ticket/18603
+user_pref("webgl.disable-fail-if-major-performance-caveat", true);
+// PREF: When webGL is enabled, do not expose information about the graphics driver
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1171228
+// https://developer.mozilla.org/en-US/docs/Web/API/WEBGL_debug_renderer_info
+user_pref("webgl.enable-debug-renderer-info", false);
+// somewhat related...
+//user_pref("pdfjs.enableWebGL", false);
+
+// PREF: Spoof dual-core CPU
+// https://trac.torproject.org/projects/tor/ticket/21675
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1360039
+user_pref("dom.maxHardwareConcurrency", 2);
+
+// PREF: Disable WebAssembly
+// https://webassembly.org/
+// https://en.wikipedia.org/wiki/WebAssembly
+// https://trac.torproject.org/projects/tor/ticket/21549
+// NOTICE: WebAssembly is required for Unity web player/games
+user_pref("javascript.options.wasm", false);
+
+/******************************************************************************
+ * SECTION: Misc *
+ ******************************************************************************/
+
+// PREF: Disable face detection
+user_pref("camera.control.face_detection.enabled", false);
+
+// PREF: Disable GeoIP lookup on your address to set default search engine region
+// https://trac.torproject.org/projects/tor/ticket/16254
+// https://support.mozilla.org/en-US/kb/how-stop-firefox-making-automatic-connections#w_geolocation-for-default-search-engine
+user_pref("browser.search.countryCode", "US");
+user_pref("browser.search.region", "US");
+user_pref("browser.search.geoip.url", "");
+
+// PREF: Set Accept-Language HTTP header to en-US regardless of Firefox localization
+// https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Language
+user_pref("intl.accept_languages", "en-US, en");
+
+// PREF: Don't use OS values to determine locale, force using Firefox locale setting
+// http://kb.mozillazine.org/Intl.locale.matchOS
+user_pref("intl.locale.matchOS", false);
+
+// Use LANG environment variable to choose locale (disabled)
+//pref("intl.locale.requested", "");
+
+// PREF: Don't use Mozilla-provided location-specific search engines
+user_pref("browser.search.geoSpecificDefaults", false);
+
+// PREF: Do not automatically send selection to clipboard on some Linux platforms
+// http://kb.mozillazine.org/Clipboard.autocopy
+user_pref("clipboard.autocopy", false);
+
+// PREF: Prevent leaking application locale/date format using JavaScript
+// https://bugzilla.mozilla.org/show_bug.cgi?id=867501
+// https://hg.mozilla.org/mozilla-central/rev/52d635f2b33d
+user_pref("javascript.use_us_english_locale", true);
+
+// PREF: Do not submit invalid URIs entered in the address bar to the default search engine
+// http://kb.mozillazine.org/Keyword.enabled
+user_pref("keyword.enabled", false);
+
+// PREF: Don't trim HTTP off of URLs in the address bar.
+// https://bugzilla.mozilla.org/show_bug.cgi?id=665580
+user_pref("browser.urlbar.trimURLs", false);
+
+// PREF: Don't try to guess domain names when entering an invalid domain name in URL bar
+// http://www-archive.mozilla.org/docs/end-user/domain-guessing.html
+user_pref("browser.fixup.alternate.enabled", false);
+
+// PREF: When browser.fixup.alternate.enabled is enabled, strip password from 'user:password@...' URLs
+// https://github.com/pyllyukko/user.js/issues/290#issuecomment-303560851
+user_pref("browser.fixup.hide_user_pass", true);
+
+// PREF: Send DNS request through SOCKS when SOCKS proxying is in use
+// https://trac.torproject.org/projects/tor/wiki/doc/TorifyHOWTO/WebBrowsers
+user_pref("network.proxy.socks_remote_dns", true);
+
+// PREF: Don't monitor OS online/offline connection state
+// https://trac.torproject.org/projects/tor/ticket/18945
+user_pref("network.manage-offline-status", false);
+
+// PREF: Enforce Mixed Active Content Blocking
+// https://support.mozilla.org/t5/Protect-your-privacy/Mixed-content-blocking-in-Firefox/ta-p/10990
+// https://developer.mozilla.org/en-US/docs/Site_Compatibility_for_Firefox_23#Non-SSL_contents_on_SSL_pages_are_blocked_by_default
+// https://blog.mozilla.org/tanvi/2013/04/10/mixed-content-blocking-enabled-in-firefox-23/
+user_pref("security.mixed_content.block_active_content", true);
+
+// PREF: Enforce Mixed Passive Content blocking (a.k.a. Mixed Display Content)
+// NOTICE: Enabling Mixed Display Content blocking can prevent images/styles... from loading properly when connection to the website is only partially secured
+user_pref("security.mixed_content.block_display_content", true);
+
+// PREF: Disable JAR from opening Unsafe File Types
+// http://kb.mozillazine.org/Network.jar.open-unsafe-types
+// CIS Mozilla Firefox 24 ESR v1.0.0 - 3.7
+user_pref("network.jar.open-unsafe-types", false);
+
+// CIS 2.7.4 Disable Scripting of Plugins by JavaScript
+// http://forums.mozillazine.org/viewtopic.php?f=7&t=153889
+user_pref("security.xpconnect.plugin.unrestricted", false);
+
+// PREF: Set File URI Origin Policy
+// http://kb.mozillazine.org/Security.fileuri.strict_origin_policy
+// CIS Mozilla Firefox 24 ESR v1.0.0 - 3.8
+user_pref("security.fileuri.strict_origin_policy", true);
+
+// PREF: Disable Displaying Javascript in History URLs
+// http://kb.mozillazine.org/Browser.urlbar.filter.javascript
+// CIS 2.3.6
+user_pref("browser.urlbar.filter.javascript", true);
+
+// PREF: Disable asm.js
+// http://asmjs.org/
+// https://www.mozilla.org/en-US/security/advisories/mfsa2015-29/
+// https://www.mozilla.org/en-US/security/advisories/mfsa2015-50/
+// https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2712
+user_pref("javascript.options.asmjs", false);
+
+// PREF: Disable SVG in OpenType fonts
+// https://wiki.mozilla.org/SVGOpenTypeFonts
+// https://github.com/iSECPartners/publications/tree/master/reports/Tor%20Browser%20Bundle
+user_pref("gfx.font_rendering.opentype_svg.enabled", false);
+
+// PREF: Disable in-content SVG rendering (Firefox >= 53) (disabled)
+// NOTICE-DISABLED: Disabling SVG support breaks many UI elements on many sites
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1216893
+// https://github.com/iSECPartners/publications/raw/master/reports/Tor%20Browser%20Bundle/Tor%20Browser%20Bundle%20-%20iSEC%20Deliverable%201.3.pdf#16
+//user_pref("svg.disabled", true);
+
+// PREF: Disable video stats to reduce fingerprinting threat
+// https://bugzilla.mozilla.org/show_bug.cgi?id=654550
+// https://github.com/pyllyukko/user.js/issues/9#issuecomment-100468785
+// https://github.com/pyllyukko/user.js/issues/9#issuecomment-148922065
+user_pref("media.video_stats.enabled", false);
+
+// PREF: Don't reveal build ID
+// Value taken from Tor Browser
+// https://bugzilla.mozilla.org/show_bug.cgi?id=583181
+user_pref("general.buildID.override", "20100101");
+user_pref("browser.startup.homepage_override.buildID", "20100101");
+
+// PREF: Don't use document specified fonts to prevent installed font enumeration (fingerprinting)
+// https://github.com/pyllyukko/user.js/issues/395
+// https://browserleaks.com/fonts
+// https://github.com/pyllyukko/user.js/issues/120
+user_pref("browser.display.use_document_fonts", 0);
+
+// PREF: Enable only whitelisted URL protocol handlers
+// http://kb.mozillazine.org/Network.protocol-handler.external-default
+// http://kb.mozillazine.org/Network.protocol-handler.warn-external-default
+// http://kb.mozillazine.org/Network.protocol-handler.expose.%28protocol%29
+// https://news.ycombinator.com/item?id=13047883
+// https://bugzilla.mozilla.org/show_bug.cgi?id=167475
+// https://github.com/pyllyukko/user.js/pull/285#issuecomment-298124005
+// NOTICE: Disabling nonessential protocols breaks all interaction with custom protocols such as mailto:, irc:, magnet: ... and breaks opening third-party mail/messaging/torrent/... clients when clicking on links with these protocols
+// TODO: Add externally-handled protocols from Windows 8.1 and Windows 10 (currently contains protocols only from Linux and Windows 7) that might pose a similar threat (see e.g. https://news.ycombinator.com/item?id=13044991)
+// TODO: Add externally-handled protocols from Mac OS X that might pose a similar threat (see e.g. https://news.ycombinator.com/item?id=13044991)
+// If you want to enable a protocol, set network.protocol-handler.expose.(protocol) to true and network.protocol-handler.external.(protocol) to:
+// * true, if the protocol should be handled by an external application
+// * false, if the protocol should be handled internally by Firefox
+user_pref("network.protocol-handler.warn-external-default", true);
+user_pref("network.protocol-handler.external.http", false);
+user_pref("network.protocol-handler.external.https", false);
+user_pref("network.protocol-handler.external.javascript", false);
+user_pref("network.protocol-handler.external.moz-extension", false);
+user_pref("network.protocol-handler.external.ftp", false);
+user_pref("network.protocol-handler.external.file", false);
+user_pref("network.protocol-handler.external.about", false);
+user_pref("network.protocol-handler.external.chrome", false);
+user_pref("network.protocol-handler.external.blob", false);
+user_pref("network.protocol-handler.external.data", false);
+user_pref("network.protocol-handler.expose-all", false);
+user_pref("network.protocol-handler.expose.http", true);
+user_pref("network.protocol-handler.expose.https", true);
+user_pref("network.protocol-handler.expose.javascript", true);
+user_pref("network.protocol-handler.expose.moz-extension", true);
+user_pref("network.protocol-handler.expose.ftp", true);
+user_pref("network.protocol-handler.expose.file", true);
+user_pref("network.protocol-handler.expose.about", true);
+user_pref("network.protocol-handler.expose.chrome", true);
+user_pref("network.protocol-handler.expose.blob", true);
+user_pref("network.protocol-handler.expose.data", true);
+
+/******************************************************************************
+ * SECTION: Extensions / plugins *
+ ******************************************************************************/
+
+// PREF: Ensure you have a security delay when installing add-ons (milliseconds)
+// http://kb.mozillazine.org/Disable_extension_install_delay_-_Firefox
+// http://www.squarefree.com/2004/07/01/race-conditions-in-security-dialogs/
+user_pref("security.dialog_enable_delay", 1000);
+
+// PREF: Require signatures
+// https://wiki.mozilla.org/Addons/Extension_Signing
+//user_pref("xpinstall.signatures.required", true);
+
+// PREF: Opt-out of add-on metadata updates
+// https://blog.mozilla.org/addons/how-to-opt-out-of-add-on-metadata-updates/
+user_pref("extensions.getAddons.cache.enabled", false);
+
+// PREF: Opt-out of themes (Persona) updates
+// https://support.mozilla.org/t5/Firefox/how-do-I-prevent-autoamtic-updates-in-a-50-user-environment/td-p/144287
+user_pref("lightweightThemes.update.enabled", false);
+
+// PREF: Disable Flash Player NPAPI plugin
+// http://kb.mozillazine.org/Flash_plugin
+user_pref("plugin.state.flash", 0);
+
+// PREF: Disable Java NPAPI plugin
+user_pref("plugin.state.java", 0);
+
+// PREF: Disable sending Flash Player crash reports
+user_pref("dom.ipc.plugins.flash.subprocess.crashreporter.enabled", false);
+
+// PREF: When Flash crash reports are enabled, don't send the visited URL in the crash report
+user_pref("dom.ipc.plugins.reportCrashURL", false);
+
+// PREF: When Flash is enabled, download and use Mozilla SWF URIs blocklist
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1237198
+// https://github.com/mozilla-services/shavar-plugin-blocklist
+user_pref("browser.safebrowsing.blockedURIs.enabled", true);
+
+// PREF: Disable Gnome Shell Integration NPAPI plugin
+user_pref("plugin.state.libgnome-shell-browser-plugin", 0);
+
+// PREF: Disable the bundled OpenH264 video codec (disabled)
+// http://forums.mozillazine.org/viewtopic.php?p=13845077&sid=28af2622e8bd8497b9113851676846b1#p13845077
+//user_pref("media.gmp-provider.enabled", false);
+
+// PREF: Enable plugins click-to-play
+// https://wiki.mozilla.org/Firefox/Click_To_Play
+// https://blog.mozilla.org/security/2012/10/11/click-to-play-plugins-blocklist-style/
+user_pref("plugins.click_to_play", true);
+
+// PREF: Updates addons automatically
+// https://blog.mozilla.org/addons/how-to-turn-off-add-on-updates/
+user_pref("extensions.update.enabled", true);
+
+// PREF: Enable add-on and certificate blocklists (OneCRL) from Mozilla
+// https://wiki.mozilla.org/Blocklisting
+// https://blocked.cdn.mozilla.net/
+// http://kb.mozillazine.org/Extensions.blocklist.enabled
+// http://kb.mozillazine.org/Extensions.blocklist.url
+// https://blog.mozilla.org/security/2015/03/03/revoking-intermediate-certificates-introducing-onecrl/
+// Updated at interval defined in extensions.blocklist.interval (default: 86400)
+user_pref("extensions.blocklist.enabled", true);
+user_pref("services.blocklist.update_enabled", true);
+
+// PREF: Decrease system information leakage to Mozilla blocklist update servers
+// https://trac.torproject.org/projects/tor/ticket/16931
+user_pref("extensions.blocklist.url", "https://blocklist.addons.mozilla.org/blocklist/3/%APP_ID%/%APP_VERSION%/");
+
+// PREF: Disable system add-on updates (hidden & always-enabled add-ons from Mozilla)
+// https://firefox-source-docs.mozilla.org/toolkit/mozapps/extensions/addon-manager/SystemAddons.html
+// https://blog.mozilla.org/data/2018/08/20/effectively-measuring-search-in-firefox/
+// https://github.com/pyllyukko/user.js/issues/419
+// https://dxr.mozilla.org/mozilla-central/source/toolkit/mozapps/extensions/AddonManager.jsm#1248-1257
+// NOTICE: Disabling system add-on updates prevents Mozilla from "hotfixing" your browser to patch critical problems (one possible use case from the documentation)
+user_pref("extensions.systemAddon.update.enabled", false);
+
+/******************************************************************************
+ * SECTION: Firefox (anti-)features / components * *
+ ******************************************************************************/
+
+// PREF: Disable Extension recommendations (Firefox >= 65)
+// https://support.mozilla.org/en-US/kb/extension-recommendations
+user_pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr", false);
+
+// PREF: Trusted Recursive Resolver (DNS-over-HTTPS) (disabled)
+// https://wiki.mozilla.org/Trusted_Recursive_Resolver
+//user_pref("network.trr.mode", 0);
+
+// PREF: Disable WebIDE
+// https://trac.torproject.org/projects/tor/ticket/16222
+// https://developer.mozilla.org/docs/Tools/WebIDE
+user_pref("devtools.webide.enabled", false);
+user_pref("devtools.webide.autoinstallADBHelper", false);
+user_pref("devtools.webide.autoinstallFxdtAdapters", false);
+
+// PREF: Disable remote debugging
+// https://developer.mozilla.org/en-US/docs/Tools/Remote_Debugging/Debugging_Firefox_Desktop
+// https://developer.mozilla.org/en-US/docs/Tools/Tools_Toolbox#Advanced_settings
+user_pref("devtools.debugger.remote-enabled", false);
+user_pref("devtools.chrome.enabled", false);
+user_pref("devtools.debugger.force-local", true);
+
+// PREF: Disable Mozilla telemetry/experiments
+// https://wiki.mozilla.org/Platform/Features/Telemetry
+// https://wiki.mozilla.org/Privacy/Reviews/Telemetry
+// https://wiki.mozilla.org/Telemetry
+// https://www.mozilla.org/en-US/legal/privacy/firefox.html#telemetry
+// https://support.mozilla.org/t5/Firefox-crashes/Mozilla-Crash-Reporter/ta-p/1715
+// https://wiki.mozilla.org/Security/Reviews/Firefox6/ReviewNotes/telemetry
+// https://gecko.readthedocs.io/en/latest/browser/experiments/experiments/manifest.html
+// https://wiki.mozilla.org/Telemetry/Experiments
+// https://support.mozilla.org/en-US/questions/1197144
+// https://firefox-source-docs.mozilla.org/toolkit/components/telemetry/telemetry/internals/preferences.html#id1
+user_pref("toolkit.telemetry.enabled", false);
+user_pref("toolkit.telemetry.unified", false);
+user_pref("toolkit.telemetry.archive.enabled", false);
+user_pref("experiments.supported", false);
+user_pref("experiments.enabled", false);
+user_pref("experiments.manifest.uri", "");
+
+// PREF: Disallow Necko to do A/B testing
+// https://trac.torproject.org/projects/tor/ticket/13170
+user_pref("network.allow-experiments", false);
+
+// PREF: Disable sending Firefox crash reports to Mozilla servers
+// https://wiki.mozilla.org/Breakpad
+// http://kb.mozillazine.org/Breakpad
+// https://dxr.mozilla.org/mozilla-central/source/toolkit/crashreporter
+// https://bugzilla.mozilla.org/show_bug.cgi?id=411490
+// A list of submitted crash reports can be found at about:crashes
+user_pref("breakpad.reportURL", "");
+
+// PREF: Disable sending reports of tab crashes to Mozilla (about:tabcrashed), don't nag user about unsent crash reports
+// https://hg.mozilla.org/mozilla-central/file/tip/browser/app/profile/firefox.js
+user_pref("browser.tabs.crashReporting.sendReport", false);
+user_pref("browser.crashReports.unsubmittedCheck.enabled", false);
+
+// PREF: Disable FlyWeb (discovery of LAN/proximity IoT devices that expose a Web interface)
+// https://wiki.mozilla.org/FlyWeb
+// https://wiki.mozilla.org/FlyWeb/Security_scenarios
+// https://docs.google.com/document/d/1eqLb6cGjDL9XooSYEEo7mE-zKQ-o-AuDTcEyNhfBMBM/edit
+// http://www.ghacks.net/2016/07/26/firefox-flyweb
+user_pref("dom.flyweb.enabled", false);
+
+// PREF: Disable the UITour backend
+// https://trac.torproject.org/projects/tor/ticket/19047#comment:3
+user_pref("browser.uitour.enabled", false);
+
+// PREF: Enable Firefox Tracking Protection
+// https://wiki.mozilla.org/Security/Tracking_protection
+// https://support.mozilla.org/en-US/kb/tracking-protection-firefox
+// https://support.mozilla.org/en-US/kb/tracking-protection-pbm
+// https://kontaxis.github.io/trackingprotectionfirefox/
+// https://feeding.cloud.geek.nz/posts/how-tracking-protection-works-in-firefox/
+user_pref("privacy.trackingprotection.enabled", true);
+user_pref("privacy.trackingprotection.pbmode.enabled", true);
+
+// PREF: Enable contextual identity Containers feature (Firefox >= 52)
+// NOTICE: Containers are not available in Private Browsing mode
+// https://wiki.mozilla.org/Security/Contextual_Identity_Project/Containers
+user_pref("privacy.userContext.enabled", true);
+
+// PREF: Enable Firefox's anti-fingerprinting mode ("resist fingerprinting" or RFP) (Tor Uplift project)
+// https://wiki.mozilla.org/Security/Tor_Uplift/Tracking
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1333933
+// https://wiki.mozilla.org/Security/Fingerprinting
+// NOTICE: RFP breaks some keyboard shortcuts used in certain websites (see #443)
+// NOTICE: RFP changes your time zone
+// NOTICE: RFP breaks some DDoS protection pages (Cloudflare)
+user_pref("privacy.resistFingerprinting", true);
+
+// PREF: disable mozAddonManager Web API [FF57+]
+// https://bugzilla.mozilla.org/buglist.cgi?bug_id=1384330
+// https://bugzilla.mozilla.org/buglist.cgi?bug_id=1406795
+// https://bugzilla.mozilla.org/buglist.cgi?bug_id=1415644
+// https://bugzilla.mozilla.org/buglist.cgi?bug_id=1453988
+// https://trac.torproject.org/projects/tor/ticket/26114
+user_pref("privacy.resistFingerprinting.block_mozAddonManager", true);
+user_pref("extensions.webextensions.restrictedDomains", "");
+
+// PREF: enable RFP letterboxing / resizing of inner window [FF67+] (disabled)
+// https://bugzilla.mozilla.org/1407366
+//user_pref("privacy.resistFingerprinting.letterboxing", true);
+//user_pref("privacy.resistFingerprinting.letterboxing.dimensions", "800x600, 1000x1000, 1600x900");
+
+// PREF: disable showing about:blank/maximized window as soon as possible during startup [FF60+]
+// https://bugzilla.mozilla.org/1448423
+user_pref("browser.startup.blankWindow", false);
+
+// PREF: Disable the built-in PDF viewer
+// https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2015-2743
+// https://blog.mozilla.org/security/2015/08/06/firefox-exploit-found-in-the-wild/
+// https://www.mozilla.org/en-US/security/advisories/mfsa2015-69/
+user_pref("pdfjs.disabled", true);
+
+// PREF: Disable collection/sending of the health report (healthreport.sqlite*)
+// https://support.mozilla.org/en-US/kb/firefox-health-report-understand-your-browser-perf
+// https://gecko.readthedocs.org/en/latest/toolkit/components/telemetry/telemetry/preferences.html
+user_pref("datareporting.healthreport.uploadEnabled", false);
+user_pref("datareporting.healthreport.service.enabled", false);
+user_pref("datareporting.policy.dataSubmissionEnabled", false);
+// "Allow Firefox to make personalized extension recommendations"
+user_pref("browser.discovery.enabled", false);
+
+// PREF: Disable Shield/Heartbeat/Normandy (Mozilla user rating telemetry)
+// https://wiki.mozilla.org/Advocacy/heartbeat
+// https://trac.torproject.org/projects/tor/ticket/19047
+// https://trac.torproject.org/projects/tor/ticket/18738
+// https://wiki.mozilla.org/Firefox/Shield
+// https://github.com/mozilla/normandy
+// https://support.mozilla.org/en-US/kb/shield
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1370801
+user_pref("app.normandy.enabled", false);
+user_pref("app.normandy.api_url", "");
+user_pref("extensions.shield-recipe-client.enabled", false);
+user_pref("app.shield.optoutstudies.enabled", false);
+
+
+// PREF: Disable Firefox Hello (disabled) (Firefox < 49)
+// https://wiki.mozilla.org/Loop
+// https://support.mozilla.org/t5/Chat-and-share/Support-for-Hello-discontinued-in-Firefox-49/ta-p/37946
+// NOTICE-DISABLED: Firefox Hello requires setting `media.peerconnection.enabled` and `media.getusermedia.screensharing.enabled` to true, `security.OCSP.require` to false to work.
+//user_pref("loop.enabled", false);
+
+// PREF: Disable Firefox Hello metrics collection
+// https://groups.google.com/d/topic/mozilla.dev.platform/nyVkCx-_sFw/discussion
+user_pref("loop.logDomains", false);
+
+// PREF: Enable Auto Update (disabled)
+// NOTICE: Fully automatic updates are disabled and left to package management systems on Linux. Windows users may want to change this setting.
+// CIS 2.1.1
+//user_pref("app.update.auto", true);
+
+// PREF: Enforce checking for Firefox updates
+// http://kb.mozillazine.org/App.update.enabled
+// NOTICE: Update check page might incorrectly report Firefox ESR as out-of-date
+user_pref("app.update.enabled", true);
+
+// PREF: Enable blocking reported web forgeries
+// https://wiki.mozilla.org/Security/Safe_Browsing
+// http://kb.mozillazine.org/Safe_browsing
+// https://support.mozilla.org/en-US/kb/how-does-phishing-and-malware-protection-work
+// http://forums.mozillazine.org/viewtopic.php?f=39&t=2711237&p=12896849#p12896849
+// CIS 2.3.4
+user_pref("browser.safebrowsing.enabled", true); // Firefox < 50
+user_pref("browser.safebrowsing.phishing.enabled", true); // firefox >= 50
+
+// PREF: Enable blocking reported attack sites
+// http://kb.mozillazine.org/Browser.safebrowsing.malware.enabled
+// CIS 2.3.5
+user_pref("browser.safebrowsing.malware.enabled", true);
+
+// PREF: Disable querying Google Application Reputation database for downloaded binary files
+// https://www.mozilla.org/en-US/firefox/39.0/releasenotes/
+// https://wiki.mozilla.org/Security/Application_Reputation
+user_pref("browser.safebrowsing.downloads.remote.enabled", false);
+
+// PREF: Disable Pocket
+// https://support.mozilla.org/en-US/kb/save-web-pages-later-pocket-firefox
+// https://github.com/pyllyukko/user.js/issues/143
+user_pref("browser.pocket.enabled", false);
+user_pref("extensions.pocket.enabled", false);
+
+// PREF: Disable "Recommended by Pocket" in Firefox Quantum
+user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false);
+
+/******************************************************************************
+ * SECTION: Automatic connections *
+ ******************************************************************************/
+
+// PREF: Limit the connection keep-alive timeout to 15 seconds (disabled)
+// https://github.com/pyllyukko/user.js/issues/387
+// http://kb.mozillazine.org/Network.http.keep-alive.timeout
+// https://httpd.apache.org/docs/current/mod/core.html#keepalivetimeout
+//user_pref("network.http.keep-alive.timeout", 15);
+
+// PREF: Disable prefetching of <link rel="next"> URLs
+// http://kb.mozillazine.org/Network.prefetch-next
+// https://developer.mozilla.org/en-US/docs/Web/HTTP/Link_prefetching_FAQ#Is_there_a_preference_to_disable_link_prefetching.3F
+user_pref("network.prefetch-next", false);
+
+// PREF: Disable DNS prefetching
+// http://kb.mozillazine.org/Network.dns.disablePrefetch
+// https://developer.mozilla.org/en-US/docs/Web/HTTP/Controlling_DNS_prefetching
+user_pref("network.dns.disablePrefetch", true);
+user_pref("network.dns.disablePrefetchFromHTTPS", true);
+
+// PREF: Disable the predictive service (Necko)
+// https://wiki.mozilla.org/Privacy/Reviews/Necko
+user_pref("network.predictor.enabled", false);
+
+// PREF: Reject .onion hostnames before passing the to DNS
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1228457
+// RFC 7686
+user_pref("network.dns.blockDotOnion", true);
+
+// PREF: Disable search suggestions in the search bar
+// http://kb.mozillazine.org/Browser.search.suggest.enabled
+user_pref("browser.search.suggest.enabled", false);
+
+// PREF: Disable "Show search suggestions in location bar results"
+user_pref("browser.urlbar.suggest.searches", false);
+// PREF: When using the location bar, don't suggest URLs from browsing history
+user_pref("browser.urlbar.suggest.history", false);
+// PREF: Disable Firefox Suggest
+// https://www.ghacks.net/2021/09/09/how-to-disable-firefox-suggest/
+// https://support.mozilla.org/en-US/kb/navigate-web-faster-firefox-suggest
+user_pref("browser.urlbar.groupLabels.enabled", false); // Firefox >= 93
+
+// PREF: Disable SSDP
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1111967
+user_pref("browser.casting.enabled", false);
+
+// PREF: Disable automatic downloading of OpenH264 codec
+// https://support.mozilla.org/en-US/kb/how-stop-firefox-making-automatic-connections#w_media-capabilities
+// https://andreasgal.com/2014/10/14/openh264-now-in-firefox/
+user_pref("media.gmp-gmpopenh264.enabled", false);
+user_pref("media.gmp-manager.url", "");
+
+// PREF: Disable speculative pre-connections
+// https://support.mozilla.org/en-US/kb/how-stop-firefox-making-automatic-connections#w_speculative-pre-connections
+// https://bugzilla.mozilla.org/show_bug.cgi?id=814169
+user_pref("network.http.speculative-parallel-limit", 0);
+
+// PREF: Disable downloading homepage snippets/messages from Mozilla
+// https://support.mozilla.org/en-US/kb/how-stop-firefox-making-automatic-connections#w_mozilla-content
+// https://wiki.mozilla.org/Firefox/Projects/Firefox_Start/Snippet_Service
+user_pref("browser.aboutHomeSnippets.updateUrl", "");
+
+// PREF: Never check updates for search engines
+// https://support.mozilla.org/en-US/kb/how-stop-firefox-making-automatic-connections#w_auto-update-checking
+user_pref("browser.search.update", false);
+
+// PREF: Disable automatic captive portal detection (Firefox >= 52.0)
+// https://support.mozilla.org/en-US/questions/1157121
+user_pref("network.captive-portal-service.enabled", false);
+
+/******************************************************************************
+ * SECTION: HTTP *
+ ******************************************************************************/
+
+// PREF: Disallow NTLMv1
+// https://bugzilla.mozilla.org/show_bug.cgi?id=828183
+user_pref("network.negotiate-auth.allow-insecure-ntlm-v1", false);
+// it is still allowed through HTTPS. uncomment the following to disable it completely.
+//user_pref("network.negotiate-auth.allow-insecure-ntlm-v1-https", false);
+
+// PREF: Enable CSP 1.1 script-nonce directive support
+// https://bugzilla.mozilla.org/show_bug.cgi?id=855326
+user_pref("security.csp.experimentalEnabled", true);
+
+// PREF: Enable Content Security Policy (CSP)
+// https://developer.mozilla.org/en-US/docs/Web/Security/CSP/Introducing_Content_Security_Policy
+// https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP
+user_pref("security.csp.enable", true);
+
+// PREF: Enable Subresource Integrity
+// https://developer.mozilla.org/en-US/docs/Web/Security/Subresource_Integrity
+// https://wiki.mozilla.org/Security/Subresource_Integrity
+user_pref("security.sri.enable", true);
+
+// PREF: DNT HTTP header (disabled)
+// https://www.mozilla.org/en-US/firefox/dnt/
+// https://en.wikipedia.org/wiki/Do_not_track_header
+// https://dnt-dashboard.mozilla.org
+// https://github.com/pyllyukko/user.js/issues/11
+// NOTICE: Do No Track must be enabled manually
+//user_pref("privacy.donottrackheader.enabled", true);
+
+// PREF: Send a referer header with the target URI as the source (disabled)
+// https://bugzilla.mozilla.org/show_bug.cgi?id=822869
+// https://github.com/pyllyukko/user.js/issues/227
+// NOTICE-DISABLED: Spoofing referers breaks functionality on websites relying on authentic referer headers
+// NOTICE-DISABLED: Spoofing referers breaks visualisation of 3rd-party sites on the Lightbeam addon
+// NOTICE-DISABLED: Spoofing referers disables CSRF protection on some login pages not implementing origin-header/cookie+token based CSRF protection
+// TODO: https://github.com/pyllyukko/user.js/issues/94, commented-out XOriginPolicy/XOriginTrimmingPolicy = 2 prefs
+//user_pref("network.http.referer.spoofSource", true);
+
+// PREF: Don't send referer headers when following links across different domains
+// https://github.com/pyllyukko/user.js/issues/227
+// https://github.com/pyllyukko/user.js/issues/328
+// https://feeding.cloud.geek.nz/posts/tweaking-referrer-for-privacy-in-firefox/
+user_pref("network.http.referer.XOriginPolicy", 2);
+
+// PREF: Accept Only 1st Party Cookies
+// http://kb.mozillazine.org/Network.cookie.cookieBehavior#1
+// NOTICE: Blocking 3rd-party cookies breaks a number of payment gateways
+// CIS 2.5.1
+user_pref("network.cookie.cookieBehavior", 1);
+
+// PREF: Enable first-party isolation
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1299996
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1260931
+// https://wiki.mozilla.org/Security/FirstPartyIsolation
+// NOTICE: First-party isolation breaks Microsoft Teams
+// NOTICE: First-party isolation causes HTTP basic auth to ask for credentials for every new tab (see #425)
+user_pref("privacy.firstparty.isolate", true);
+
+// PREF: Make sure that third-party cookies (if enabled) never persist beyond the session.
+// https://feeding.cloud.geek.nz/posts/tweaking-cookies-for-privacy-in-firefox/
+// http://kb.mozillazine.org/Network.cookie.thirdparty.sessionOnly
+// https://developer.mozilla.org/en-US/docs/Cookies_Preferences_in_Mozilla#network.cookie.thirdparty.sessionOnly
+user_pref("network.cookie.thirdparty.sessionOnly", true);
+
+// PREF: Spoof User-agent (disabled)
+//user_pref("general.useragent.override", "Mozilla/5.0 (Windows NT 6.1; rv:45.0) Gecko/20100101 Firefox/45.0");
+//user_pref("general.appname.override", "Netscape");
+//user_pref("general.appversion.override", "5.0 (Windows)");
+//user_pref("general.platform.override", "Win32");
+//user_pref("general.oscpu.override", "Windows NT 6.1");
+
+/*******************************************************************************
+ * SECTION: Caching *
+ ******************************************************************************/
+
+// PREF: Permanently enable private browsing mode
+// https://support.mozilla.org/en-US/kb/Private-Browsing
+// https://wiki.mozilla.org/PrivateBrowsing
+// NOTICE: You can not view or inspect cookies when in private browsing: https://bugzilla.mozilla.org/show_bug.cgi?id=823941
+// NOTICE: When Javascript is enabled, Websites can detect use of Private Browsing mode
+// NOTICE: Private browsing breaks Kerberos authentication
+// NOTICE: Disables "Containers" functionality (see below)
+// NOTICE: "Always use private browsing mode" (browser.privatebrowsing.autostart) disables the possibility to use password manager: https://support.mozilla.org/en-US/kb/usernames-and-passwords-are-not-saved#w_private-browsing
+user_pref("browser.privatebrowsing.autostart", true);
+
+// PREF: Do not download URLs for the offline cache
+// http://kb.mozillazine.org/Browser.cache.offline.enable
+user_pref("browser.cache.offline.enable", false);
+
+// PREF: Clear history when Firefox closes
+// https://support.mozilla.org/en-US/kb/Clear%20Recent%20History#w_how-do-i-make-firefox-clear-my-history-automatically
+// NOTICE: Installing user.js will remove your browsing history, caches and local storage.
+// NOTICE: Installing user.js **will remove your saved passwords** (https://github.com/pyllyukko/user.js/issues/27)
+// NOTICE: Clearing open windows on Firefox exit causes 2 windows to open when Firefox starts https://bugzilla.mozilla.org/show_bug.cgi?id=1334945
+user_pref("privacy.sanitize.sanitizeOnShutdown", true);
+user_pref("privacy.clearOnShutdown.cache", true);
+user_pref("privacy.clearOnShutdown.cookies", true);
+user_pref("privacy.clearOnShutdown.downloads", true);
+user_pref("privacy.clearOnShutdown.formdata", true);
+user_pref("privacy.clearOnShutdown.history", true);
+user_pref("privacy.clearOnShutdown.offlineApps", true);
+user_pref("privacy.clearOnShutdown.sessions", true);
+user_pref("privacy.clearOnShutdown.openWindows", true);
+
+// PREF: Set time range to "Everything" as default in "Clear Recent History"
+user_pref("privacy.sanitize.timeSpan", 0);
+
+// PREF: Clear everything but "Site Preferences" in "Clear Recent History"
+user_pref("privacy.cpd.offlineApps", true);
+user_pref("privacy.cpd.cache", true);
+user_pref("privacy.cpd.cookies", true);
+user_pref("privacy.cpd.downloads", true);
+user_pref("privacy.cpd.formdata", true);
+user_pref("privacy.cpd.history", true);
+user_pref("privacy.cpd.sessions", true);
+
+// PREF: Don't remember browsing history
+user_pref("places.history.enabled", false);
+
+// PREF: Disable disk cache
+// http://kb.mozillazine.org/Browser.cache.disk.enable
+user_pref("browser.cache.disk.enable", false);
+
+// PREF: Disable memory cache (disabled)
+// http://kb.mozillazine.org/Browser.cache.memory.enable
+//user_pref("browser.cache.memory.enable", false);
+
+// PREF: Disable Caching of SSL Pages
+// CIS Version 1.2.0 October 21st, 2011 2.5.8
+// http://kb.mozillazine.org/Browser.cache.disk_cache_ssl
+user_pref("browser.cache.disk_cache_ssl", false);
+
+// PREF: Disable download history
+// CIS Version 1.2.0 October 21st, 2011 2.5.5
+user_pref("browser.download.manager.retention", 0);
+
+// PREF: Disable password manager (use an external password manager!)
+// CIS Version 1.2.0 October 21st, 2011 2.5.2
+user_pref("signon.rememberSignons", false);
+
+// PREF: Disable form autofill, don't save information entered in web page forms and the Search Bar
+user_pref("browser.formfill.enable", false);
+
+// PREF: Cookies expires at the end of the session (when the browser closes)
+// http://kb.mozillazine.org/Network.cookie.lifetimePolicy#2
+user_pref("network.cookie.lifetimePolicy", 2);
+
+// PREF: Require manual intervention to autofill known username/passwords sign-in forms
+// http://kb.mozillazine.org/Signon.autofillForms
+// https://www.torproject.org/projects/torbrowser/design/#identifier-linkability
+user_pref("signon.autofillForms", false);
+
+// PREF: Disable formless login capture
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1166947
+user_pref("signon.formlessCapture.enabled", false);
+
+// PREF: When username/password autofill is enabled, still disable it on non-HTTPS sites
+// https://hg.mozilla.org/integration/mozilla-inbound/rev/f0d146fe7317
+user_pref("signon.autofillForms.http", false);
+
+// PREF: Show in-content login form warning UI for insecure login fields
+// https://hg.mozilla.org/integration/mozilla-inbound/rev/f0d146fe7317
+user_pref("security.insecure_field_warning.contextual.enabled", true);
+
+// PREF: Disable the password manager for pages with autocomplete=off (disabled)
+// https://bugzilla.mozilla.org/show_bug.cgi?id=956906
+// OWASP ASVS V9.1
+// Does not prevent any kind of auto-completion (see browser.formfill.enable, signon.autofillForms)
+//user_pref("signon.storeWhenAutocompleteOff", false);
+
+// PREF: Delete Search and Form History
+// CIS Version 1.2.0 October 21st, 2011 2.5.6
+user_pref("browser.formfill.expire_days", 0);
+
+// PREF: Clear SSL Form Session Data
+// http://kb.mozillazine.org/Browser.sessionstore.privacy_level#2
+// Store extra session data for unencrypted (non-HTTPS) sites only.
+// CIS Version 1.2.0 October 21st, 2011 2.5.7
+// NOTE: CIS says 1, we use 2
+user_pref("browser.sessionstore.privacy_level", 2);
+
+// PREF: Delete temporary files on exit
+// https://bugzilla.mozilla.org/show_bug.cgi?id=238789
+user_pref("browser.helperApps.deleteTempFileOnExit", true);
+
+// PREF: Do not create screenshots of visited pages (relates to the "new tab page" feature)
+// https://support.mozilla.org/en-US/questions/973320
+// https://developer.mozilla.org/en-US/docs/Mozilla/Preferences/Preference_reference/browser.pagethumbnails.capturing_disabled
+user_pref("browser.pagethumbnails.capturing_disabled", true);
+
+// PREF: Don't fetch and permanently store favicons for Windows .URL shortcuts created by drag and drop
+// NOTICE: .URL shortcut files will be created with a generic icon
+// Favicons are stored as .ico files in $profile_dir\shortcutCache
+user_pref("browser.shell.shortcutFavicons", false);
+
+// PREF: Disable bookmarks backups (default: 15)
+// http://kb.mozillazine.org/Browser.bookmarks.max_backups
+user_pref("browser.bookmarks.max_backups", 0);
+
+// PREF: Export bookmarks to HTML automatically when closing Firefox (disabled)
+// https://support.mozilla.org/en-US/questions/1176242
+//user_pref("browser.bookmarks.autoExportHTML", true);
+//user_pref("browser.bookmarks.file", '/path/to/bookmarks-export.html');
+
+// PREF: Disable downloading of favicons in response to favicon fingerprinting techniques
+// https://github.com/jonasstrehle/supercookie
+// http://kb.mozillazine.org/Browser.chrome.site_icons
+// https://blog.mozilla.org/security/2021/01/26/supercookie-protections/
+user_pref("browser.chrome.site_icons", false);
+
+/*******************************************************************************
+ * SECTION: UI related *
+ *******************************************************************************/
+
+// PREF: Enable insecure password warnings (login forms in non-HTTPS pages)
+// https://blog.mozilla.org/tanvi/2016/01/28/no-more-passwords-over-http-please/
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1319119
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1217156
+user_pref("security.insecure_password.ui.enabled", true);
+
+// PREF: Disable right-click menu manipulation via JavaScript (disabled)
+//user_pref("dom.event.contextmenu.enabled", false);
+
+// PREF: Disable "Are you sure you want to leave this page?" popups on page close
+// https://support.mozilla.org/en-US/questions/1043508
+// NOTICE: disabling "beforeunload" events may lead to losing data entered in web forms
+// Does not prevent JS leaks of the page close event.
+// https://developer.mozilla.org/en-US/docs/Web/Events/beforeunload
+//user_pref("dom.disable_beforeunload", true);
+
+// PREF: Disable Downloading on Desktop
+// CIS 2.3.2
+user_pref("browser.download.folderList", 2);
+
+// PREF: Always ask the user where to download
+// https://developer.mozilla.org/en/Download_Manager_preferences (obsolete)
+user_pref("browser.download.useDownloadDir", false);
+
+// PREF: Disable the "new tab page" feature and show a blank tab instead
+// https://wiki.mozilla.org/Privacy/Reviews/New_Tab
+// https://support.mozilla.org/en-US/kb/new-tab-page-show-hide-and-customize-top-sites#w_how-do-i-turn-the-new-tab-page-off
+user_pref("browser.newtabpage.enabled", false);
+user_pref("browser.newtab.url", "about:blank");
+
+// PREF: Disable Snippets
+// https://wiki.mozilla.org/Firefox/Projects/Firefox_Start/Snippet_Service
+// https://support.mozilla.org/en-US/kb/snippets-firefox-faq
+user_pref("browser.newtabpage.activity-stream.feeds.snippets", false);
+
+// PREF: Disable Activity Stream
+// https://wiki.mozilla.org/Firefox/Activity_Stream
+user_pref("browser.newtabpage.activity-stream.enabled", false);
+
+// PREF: Disable new tab tile ads & preload
+// http://www.thewindowsclub.com/disable-remove-ad-tiles-from-firefox
+// http://forums.mozillazine.org/viewtopic.php?p=13876331#p13876331
+// https://wiki.mozilla.org/Tiles/Technical_Documentation#Ping
+// https://gecko.readthedocs.org/en/latest/browser/browser/DirectoryLinksProvider.html#browser-newtabpage-directory-source
+// https://gecko.readthedocs.org/en/latest/browser/browser/DirectoryLinksProvider.html#browser-newtabpage-directory-ping
+// TODO: deprecated? not in DXR, some dead links
+user_pref("browser.newtabpage.enhanced", false);
+user_pref("browser.newtab.preload", false);
+user_pref("browser.newtabpage.directory.ping", "");
+user_pref("browser.newtabpage.directory.source", "data:text/plain,{}");
+
+// PREF: Enable Auto Notification of Outdated Plugins (Firefox < 50)
+// https://wiki.mozilla.org/Firefox3.6/Plugin_Update_Awareness_Security_Review
+// CIS Version 1.2.0 October 21st, 2011 2.1.2
+// https://hg.mozilla.org/mozilla-central/rev/304560
+user_pref("plugins.update.notifyUser", true);
+
+// PREF: Force Punycode for Internationalized Domain Names
+// http://kb.mozillazine.org/Network.IDN_show_punycode
+// https://www.xudongz.com/blog/2017/idn-phishing/
+// https://wiki.mozilla.org/IDN_Display_Algorithm
+// https://en.wikipedia.org/wiki/IDN_homograph_attack
+// https://www.mozilla.org/en-US/security/advisories/mfsa2017-02/
+// CIS Mozilla Firefox 24 ESR v1.0.0 - 3.6
+user_pref("network.IDN_show_punycode", true);
+
+// PREF: Disable inline autocomplete in URL bar
+// http://kb.mozillazine.org/Inline_autocomplete
+user_pref("browser.urlbar.autoFill", false);
+user_pref("browser.urlbar.autoFill.typed", false);
+
+// PREF: Disable CSS :visited selectors
+// https://blog.mozilla.org/security/2010/03/31/plugging-the-css-history-leak/
+// https://dbaron.org/mozilla/visited-privacy
+user_pref("layout.css.visited_links_enabled", false);
+
+// PREF: Disable URL bar autocomplete and history/bookmarks suggestions dropdown
+// http://kb.mozillazine.org/Disabling_autocomplete_-_Firefox#Firefox_3.5
+user_pref("browser.urlbar.autocomplete.enabled", false);
+
+// PREF: Do not check if Firefox is the default browser
+user_pref("browser.shell.checkDefaultBrowser", false);
+
+// PREF: When password manager is enabled, lock the password storage periodically
+// CIS Version 1.2.0 October 21st, 2011 2.5.3 Disable Prompting for Credential Storage
+user_pref("security.ask_for_password", 2);
+
+// PREF: Lock the password storage every 1 minutes (default: 30)
+user_pref("security.password_lifetime", 1);
+
+// PREF: Display a notification bar when websites offer data for offline use
+// http://kb.mozillazine.org/Browser.offline-apps.notify
+user_pref("browser.offline-apps.notify", true);
+
+/******************************************************************************
+ * SECTION: Cryptography *
+ ******************************************************************************/
+
+// PREF: Enable HTTPS-Only Mode
+// https://blog.mozilla.org/security/2020/11/17/firefox-83-introduces-https-only-mode/
+// https://www.feistyduck.com/bulletproof-tls-newsletter/issue_71_firefox_introduces_https_only_mode
+user_pref("dom.security.https_only_mode", true);
+
+// PREF: Enable HSTS preload list (pre-set HSTS sites list provided by Mozilla)
+// https://blog.mozilla.org/security/2012/11/01/preloading-hsts/
+// https://wiki.mozilla.org/Privacy/Features/HSTS_Preload_List
+// https://en.wikipedia.org/wiki/HTTP_Strict_Transport_Security
+user_pref("network.stricttransportsecurity.preloadlist", true);
+
+// PREF: Enable Online Certificate Status Protocol
+// https://en.wikipedia.org/wiki/Online_Certificate_Status_Protocol
+// https://www.imperialviolet.org/2014/04/19/revchecking.html
+// https://www.maikel.pro/blog/current-state-certificate-revocation-crls-ocsp/
+// https://wiki.mozilla.org/CA:RevocationPlan
+// https://wiki.mozilla.org/CA:ImprovingRevocation
+// https://wiki.mozilla.org/CA:OCSP-HardFail
+// https://news.netcraft.com/archives/2014/04/24/certificate-revocation-why-browsers-remain-affected-by-heartbleed.html
+// https://news.netcraft.com/archives/2013/04/16/certificate-revocation-and-the-performance-of-ocsp.html
+// NOTICE: OCSP leaks your IP and domains you visit to the CA when OCSP Stapling is not available on visited host
+// NOTICE: OCSP is vulnerable to replay attacks when nonce is not configured on the OCSP responder
+// NOTICE: OCSP adds latency (performance)
+// NOTICE: Short-lived certificates are not checked for revocation (security.pki.cert_short_lifetime_in_days, default:10)
+// CIS Version 1.2.0 October 21st, 2011 2.2.4
+user_pref("security.OCSP.enabled", 1);
+
+// PREF: Enable OCSP Stapling support
+// https://en.wikipedia.org/wiki/OCSP_stapling
+// https://blog.mozilla.org/security/2013/07/29/ocsp-stapling-in-firefox/
+// https://www.digitalocean.com/community/tutorials/how-to-configure-ocsp-stapling-on-apache-and-nginx
+user_pref("security.ssl.enable_ocsp_stapling", true);
+
+// PREF: Enable OCSP Must-Staple support (Firefox >= 45)
+// https://blog.mozilla.org/security/2015/11/23/improving-revocation-ocsp-must-staple-and-short-lived-certificates/
+// https://www.entrust.com/ocsp-must-staple/
+// https://github.com/schomery/privacy-settings/issues/40
+// NOTICE: Firefox falls back on plain OCSP when must-staple is not configured on the host certificate
+user_pref("security.ssl.enable_ocsp_must_staple", true);
+
+// PREF: Require a valid OCSP response for OCSP enabled certificates
+// https://groups.google.com/forum/#!topic/mozilla.dev.security/n1G-N2-HTVA
+// Disabling this will make OCSP bypassable by MitM attacks suppressing OCSP responses
+// NOTICE: `security.OCSP.require` will make the connection fail when the OCSP responder is unavailable
+// NOTICE: `security.OCSP.require` is known to break browsing on some [captive portals](https://en.wikipedia.org/wiki/Captive_portal)
+user_pref("security.OCSP.require", true);
+
+// PREF: Disable TLS Session Tickets
+// https://www.blackhat.com/us-13/briefings.html#NextGen
+// https://media.blackhat.com/us-13/US-13-Daigniere-TLS-Secrets-Slides.pdf
+// https://media.blackhat.com/us-13/US-13-Daigniere-TLS-Secrets-WP.pdf
+// https://bugzilla.mozilla.org/show_bug.cgi?id=917049
+// https://bugzilla.mozilla.org/show_bug.cgi?id=967977
+user_pref("security.ssl.disable_session_identifiers", true);
+
+// PREF: Only allow TLS 1.[2-3]
+// http://kb.mozillazine.org/Security.tls.version.*
+// 1 = TLS 1.0 is the minimum required / maximum supported encryption protocol. (This is the current default for the maximum supported version.)
+// 2 = TLS 1.1 is the minimum required / maximum supported encryption protocol.
+// 3 = TLS 1.2 is the minimum required / maximum supported encryption protocol.
+// 4 = TLS 1.3 is the minimum required / maximum supported encryption protocol.
+user_pref("security.tls.version.min", 3);
+user_pref("security.tls.version.max", 4);
+
+// PREF: Disable insecure TLS version fallback
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1084025
+// https://github.com/pyllyukko/user.js/pull/206#issuecomment-280229645
+user_pref("security.tls.version.fallback-limit", 4);
+
+// PREF: Enforce Public Key Pinning
+// https://en.wikipedia.org/wiki/HTTP_Public_Key_Pinning
+// https://wiki.mozilla.org/SecurityEngineering/Public_Key_Pinning
+// "2. Strict. Pinning is always enforced."
+user_pref("security.cert_pinning.enforcement_level", 2);
+
+// PREF: Disallow SHA-1
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1302140
+// https://shattered.io/
+user_pref("security.pki.sha1_enforcement_level", 1);
+
+// PREF: Warn the user when server doesn't support RFC 5746 ("safe" renegotiation)
+// https://wiki.mozilla.org/Security:Renegotiation#security.ssl.treat_unsafe_negotiation_as_broken
+// https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-3555
+user_pref("security.ssl.treat_unsafe_negotiation_as_broken", true);
+
+// PREF: Disallow connection to servers not supporting safe renegotiation (disabled)
+// https://wiki.mozilla.org/Security:Renegotiation#security.ssl.require_safe_negotiation
+// https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2009-3555
+// TODO: `security.ssl.require_safe_negotiation` is more secure but makes browsing next to impossible (2012-2014-... - `ssl_error_unsafe_negotiation` errors), so is left disabled
+//user_pref("security.ssl.require_safe_negotiation", true);
+
+// PREF: Disable automatic reporting of TLS connection errors
+// https://support.mozilla.org/en-US/kb/certificate-pinning-reports
+// we could also disable security.ssl.errorReporting.enabled, but I think it's
+// good to leave the option to report potentially malicious sites if the user
+// chooses to do so.
+// you can test this at https://pinningtest.appspot.com/
+user_pref("security.ssl.errorReporting.automatic", false);
+
+// PREF: Pre-populate the current URL but do not pre-fetch the certificate in the "Add Security Exception" dialog
+// http://kb.mozillazine.org/Browser.ssl_override_behavior
+// https://github.com/pyllyukko/user.js/issues/210
+user_pref("browser.ssl_override_behavior", 1);
+
+// PREF: Encrypted SNI (when TRR is enabled)
+// https://www.cloudflare.com/ssl/encrypted-sni/
+// https://wiki.mozilla.org/Trusted_Recursive_Resolver#ESNI
+// https://en.wikipedia.org/wiki/Server_Name_Indication#Security_implications_(ESNI)
+user_pref("network.security.esni.enabled", true);
+
+/******************************************************************************
+ * SECTION: Cipher suites *
+ ******************************************************************************/
+
+// PREF: Disable null ciphers
+user_pref("security.ssl3.rsa_null_sha", false);
+user_pref("security.ssl3.rsa_null_md5", false);
+user_pref("security.ssl3.ecdhe_rsa_null_sha", false);
+user_pref("security.ssl3.ecdhe_ecdsa_null_sha", false);
+user_pref("security.ssl3.ecdh_rsa_null_sha", false);
+user_pref("security.ssl3.ecdh_ecdsa_null_sha", false);
+
+// PREF: Disable SEED cipher
+// https://en.wikipedia.org/wiki/SEED
+user_pref("security.ssl3.rsa_seed_sha", false);
+
+// PREF: Disable 40/56/128-bit ciphers
+// 40-bit ciphers
+user_pref("security.ssl3.rsa_rc4_40_md5", false);
+user_pref("security.ssl3.rsa_rc2_40_md5", false);
+// 56-bit ciphers
+user_pref("security.ssl3.rsa_1024_rc4_56_sha", false);
+// 128-bit ciphers
+user_pref("security.ssl3.rsa_camellia_128_sha", false);
+user_pref("security.ssl3.ecdhe_rsa_aes_128_sha", false);
+user_pref("security.ssl3.ecdhe_ecdsa_aes_128_sha", false);
+user_pref("security.ssl3.ecdh_rsa_aes_128_sha", false);
+user_pref("security.ssl3.ecdh_ecdsa_aes_128_sha", false);
+user_pref("security.ssl3.dhe_rsa_camellia_128_sha", false);
+user_pref("security.ssl3.dhe_rsa_aes_128_sha", false);
+
+// PREF: Disable RC4
+// https://developer.mozilla.org/en-US/Firefox/Releases/38#Security
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1138882
+// https://rc4.io/
+// https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-2566
+user_pref("security.ssl3.ecdh_ecdsa_rc4_128_sha", false);
+user_pref("security.ssl3.ecdh_rsa_rc4_128_sha", false);
+user_pref("security.ssl3.ecdhe_ecdsa_rc4_128_sha", false);
+user_pref("security.ssl3.ecdhe_rsa_rc4_128_sha", false);
+user_pref("security.ssl3.rsa_rc4_128_md5", false);
+user_pref("security.ssl3.rsa_rc4_128_sha", false);
+user_pref("security.tls.unrestricted_rc4_fallback", false);
+
+// PREF: Disable 3DES (effective key size is < 128)
+// https://en.wikipedia.org/wiki/3des#Security
+// http://en.citizendium.org/wiki/Meet-in-the-middle_attack
+// http://www-archive.mozilla.org/projects/security/pki/nss/ssl/fips-ssl-ciphersuites.html
+user_pref("security.ssl3.dhe_dss_des_ede3_sha", false);
+user_pref("security.ssl3.dhe_rsa_des_ede3_sha", false);
+user_pref("security.ssl3.ecdh_ecdsa_des_ede3_sha", false);
+user_pref("security.ssl3.ecdh_rsa_des_ede3_sha", false);
+user_pref("security.ssl3.ecdhe_ecdsa_des_ede3_sha", false);
+user_pref("security.ssl3.ecdhe_rsa_des_ede3_sha", false);
+user_pref("security.ssl3.rsa_des_ede3_sha", false);
+user_pref("security.ssl3.rsa_fips_des_ede3_sha", false);
+
+// PREF: Disable ciphers with ECDH (non-ephemeral)
+user_pref("security.ssl3.ecdh_rsa_aes_256_sha", false);
+user_pref("security.ssl3.ecdh_ecdsa_aes_256_sha", false);
+
+// PREF: Disable 256 bits ciphers without PFS
+user_pref("security.ssl3.rsa_camellia_256_sha", false);
+
+// PREF: Enable GCM ciphers (TLSv1.2 only)
+// https://en.wikipedia.org/wiki/Galois/Counter_Mode
+user_pref("security.ssl3.ecdhe_ecdsa_aes_128_gcm_sha256", true); // 0xc02b
+user_pref("security.ssl3.ecdhe_rsa_aes_128_gcm_sha256", true); // 0xc02f
+
+// PREF: Enable ChaCha20 and Poly1305 (Firefox >= 47)
+// https://www.mozilla.org/en-US/firefox/47.0/releasenotes/
+// https://tools.ietf.org/html/rfc7905
+// https://bugzilla.mozilla.org/show_bug.cgi?id=917571
+// https://bugzilla.mozilla.org/show_bug.cgi?id=1247860
+// https://cr.yp.to/chacha.html
+user_pref("security.ssl3.ecdhe_ecdsa_chacha20_poly1305_sha256", true);
+user_pref("security.ssl3.ecdhe_rsa_chacha20_poly1305_sha256", true);
+
+// PREF: Disable ciphers susceptible to the logjam attack
+// https://weakdh.org/
+user_pref("security.ssl3.dhe_rsa_camellia_256_sha", false);
+user_pref("security.ssl3.dhe_rsa_aes_256_sha", false);
+
+// PREF: Disable ciphers with DSA (max 1024 bits)
+user_pref("security.ssl3.dhe_dss_aes_128_sha", false);
+user_pref("security.ssl3.dhe_dss_aes_256_sha", false);
+user_pref("security.ssl3.dhe_dss_camellia_128_sha", false);
+user_pref("security.ssl3.dhe_dss_camellia_256_sha", false);
+
+// PREF: Ciphers with CBC & SHA-1 (disabled)
+//user_pref("security.ssl3.rsa_aes_256_sha", false); // 0x35
+//user_pref("security.ssl3.rsa_aes_128_sha", false); // 0x2f
+//user_pref("security.ssl3.ecdhe_rsa_aes_256_sha", false); // 0xc014
+//user_pref("security.ssl3.ecdhe_ecdsa_aes_256_sha", false); // 0xc00a
+
+/*
+ * SECTION: Jacob's Additions
+ */
+
+/* No */
+user_pref("browser.aboutConfig.showWarning", false);
+
+/* Why would I want to check for updates? */
+user_pref("app.update.enabled", false);
+
+/* Fix the address bar */
+user_pref("keyword.enable", false);
+user_pref("browser.search.update", false);
+user_pref("browser.search.suggest.enabled", false);
+user_pref("browser.search.hiddenOneOffs", "Google,Amazon.com,Bing,DuckDuckGo,eBay,Wikipedia (en)");
+user_pref("browser.urlbar.shortcuts.bookmarks", false);
+user_pref("browser.urlbar.shortcuts.history", false);
+user_pref("browser.urlbar.shortcuts.tabs", false);
+user_pref("browser.urlbar.suggest.bookmark", false);
+user_pref("browser.urlbar.suggest.engines", false);
+user_pref("browser.urlbar.suggest.openpage", false);
+user_pref("browser.urlbar.suggest.quicksuggest.nonsponsored", false);
+user_pref("browser.urlbar.suggest.quicksuggest.sponsored", false);
+user_pref("browser.urlbar.suggest.topsites", false);
+
+/* Make the UI more compact */
+user_pref("browser.uidensity", 1);
+
+/* Disable built-in viewing of "xml,svg,webp,avif,jxl" */
+user_pref("browser.download.viewableInternally.enabledTypes", "");
