celenityy/Phoenix 2025.05.11.1

on GitLab

• Prevented third parties from setting cookies unless the third party already has cookies as a first party (Like Safari).

  See details: https://codeberg.org/celenity/Phoenix/commit/72b9578d04c5c16df27b4e51849ddd44781ab0d8

  privacy.dynamic_firstparty.limitForeign -> true

• Limited maximum cookie lifetime to 6 months/180 days (Like Brave).

  See details: https://github.com/brave/brave-browser/issues/3443 + https://github.com/fmarier/brave-core/commit/4d222df50a8dfaaabb31e9f2c5070c4db5ba8fd5

  network.cookie.maxageCap -> 15552000

• Enabled tracking protection against CMPs (Cookie/consent managers) by default, in all browsing windows.

  privacy.trackingprotection.consentmanager.annotate_channels -> true
privacy.trackingprotection.consentmanager.skip.enabled -> false
privacy.trackingprotection.consentmanager.skip.pbmode.enabled -> false

• Enabled an additional plug-in blocklist (mozplugin-block-digest256) from Mozilla (Like Nightly).

  urlclassifier.blockedTable -> moztest-block-simple,mozplugin-block-digest256

• Disabled network connectivity status monitoring.

  See details: https://bugzilla.mozilla.org/show_bug.cgi?id=620472

  network.manage-offline-status -> false
network.offline-mirrors-connectivity -> false

  DESKTOP (Red Hat/Fedora-specific):

  offline.autoDetect -> false
toolkit.networkmanager.disable -> true

• Instead of blocking all mixed display content unconditionally, we now only block mixed display content if it can't be upgraded to HTTPS.

  See details: https://github.com/mozilla/policy-templates/issues/1141

  security.mixed_content.block_display_content -> false

• Disabled the automatic import of OS client authentication certificates by default.

  See details: https://codeberg.org/celenity/Phoenix/commit/62285ea38b6bdab2d06e0376848169c2a2e06a24

  security.osclientcerts.autoload -> false

• Disabled the Wi-Fi Tickler to prevent proxy bypasses.

  See details: https://codeberg.org/celenity/Phoenix/commit/458bb0cb0ff7a9cf5beaba476b888bfb7ec48eb0

  network.tickle-wifi.enabled -> false

• Set proxy extensions (if installed) to start as soon as possible, instead of waiting for the first browser window to open.

  extensions.webextensions.early_background_wakeup_on_request -> true

• Prevented HTTP/3 from being disabled if enterprise policies are configured.

  network.http.http3.disable_when_third_party_roots_found -> false

• ANDROID: Disabled TLS session identifiers.

  See details: https://codeberg.org/celenity/Phoenix/commit/38ec7461f1e437f502ba7f82d2d836b0386e03dd

  security.ssl.disable_session_identifiers -> true

• Limited/restricted CSP reporting as much as possible (We still block these requests by default with uBlock Origin).

  security.csp.reporting.limit.count -> 1
security.csp.reporting.limit.timespan -> 999999999
security.csp.reporting.script-sample.max-length -> 0
security.csp.truncate_blocked_uri_for_frame_navigations -> true

• DESKTOP: Set the browser to check for updates hourly (instead of the default of 6 hours in foreground and 7 hours in background).

  app.update.background.interval -> 3600
app.update.interval -> 3600

• DESKTOP: Set the browser to immediately prompt users when an update is ready, and ensured the binary is always old enough to check for updates.

  app.update.checkInstallTime.days -> 0
app.update.promptWaitTime -> 0

• Disabled the Battery API.

  See details: https://codeberg.org/celenity/Phoenix/commit/b4e578ed809ca5d63b20ff22bda78cb76f5d4d07

  dom.battery.enabled -> false

• Disabled the Clipboard API.

  See details: https://codeberg.org/celenity/Phoenix/commit/e16d6048a13b685c35d51371fd067a6e5fde5714

  dom.events.asyncClipboard.clipboardItem -> false
dom.events.asyncClipboard.readText -> false
dom.events.testing.asyncClipboard -> false

• Disabled online speech recognition.

  See details: https://codeberg.org/celenity/Phoenix/commit/aea7d4ba2d80f0bc0154ee0da3b07aca476aecae

  media.webspeech.service.endpoint -> data;

• Disabled scanning add-on scopes on launch.

  See details: https://codeberg.org/celenity/Phoenix/commit/4660fcd9ac90bde34dc230ca58f3fe3f76d9267e

  extensions.startupScanScopes -> 0

• Disabled Gecko Media Plugins (GMP).

  See details: https://codeberg.org/celenity/Phoenix/commit/cc6fb2c13054c1ff6cb2fe1469591b0272e84c78

  media.gmp-provider.enabled -> false

• ANDROID: Disabled HLS.

  See details: https://codeberg.org/celenity/Phoenix/commit/0abcbeac89d9eaa4b2d6c0b8a573f6815ebb72b6

  media.hls.enabled -> false

• DESKTOP: Enabled Arbitrary Code Guard (ACG) (for Windows users).

  See details: https://medium.com/@boutnaru/the-windows-security-journey-acg-arbitrary-code-guard-74b08a8bd1e5

  security.sandbox.gmp.acg.enabled -> true
security.sandbox.rdd.acg.enabled -> true
security.sandbox.utility-wmf.acg.enabled -> true

• DESKTOP: Enabled Code Integrity Guard (CIG) for pre-spawn (for Windows users).

  See details: https://github.com/mozilla/policy-templates/issues/1141

  security.sandbox.cig.prespawn.enabled -> true

• DESKTOP: Enabled Shadow Stacks (for Windows users).

  See details: https://wikipedia.org/wiki/Shadow_stack

  security.sandbox.content.shadow-stack.enabled -> true
security.sandbox.gmp.shadow-stack.enabled -> true
security.sandbox.gpu.shadow-stack.enabled -> true
security.sandbox.rdd.shadow-stack.enabled -> true
security.sandbox.socket.shadow-stack.enabled -> true

• DESKTOP: Set the browser to always warn on unprivileged namespaces (for Linux users).

  security.sandbox.warn_unprivileged_namespaces -> true

• ANDROID: Disabled sending console output to logcat by default.

  See details: https://codeberg.org/celenity/Phoenix/commit/dcadf87f3daacdd554f2de358be77cd568c67646

  consoleservice.logcat -> false
geckoview.console.enabled -> false

• Disabled various new telemetry pings.

  browser.engagement.ctrlTab.has-used -> true
telemetry.glean.internal.finalInactive -> false
telemetry.glean.internal.maxPingsPerMinute -> 0

  DESKTOP:

  browser.engagement.downloads-button.has-used -> true
browser.engagement.fxa-toolbar-menu-button.has-used -> true
browser.engagement.home-button.has-used -> true
browser.engagement.library-button.has-used -> true
browser.engagement.search_counts.pbm -> false
browser.engagement.sidebar-button.has-used -> true
browser.engagement.total_uri_count.pbm -> false
browser.newtabpage.activity-stream.telemetry.privatePing.enabled -> false
browser.newtabpage.activity-stream.telemetry.surfaceId ->
  browser.newtabpage.ping.enabled -> false

• Disabled the automatic upload of profiler data (from 'about:logging') to Mozilla by default.

  toolkit.aboutLogging.uploadProfileToCloud -> false

• Removed Mozilla's new OHTTP telemetry endpoints.

  DESKTOP:

  browser.newtabpage.activity-stream.discoverystream.ohttp.configURL ->
  browser.newtabpage.activity-stream.discoverystream.ohttp.relayURL ->

  ANDROID:

  network.ohttp.configURL ->
  network.ohttp.relayURL ->

• Added placeholder IDs to certain (primarily telemetry-related) preferences, to reduce breakage and protect against potential fingerprinting.

  asanreporter.clientid -> unknown
datareporting.dau.cachedUsageProfileGroupID -> b0bacafe-b0ba-cafe-b0ba-cafeb0bacafe

  DESKTOP:

  browser.contentblocking.cfr-milestone.milestone-shown-time -> 999999999
browser.contextual-services.contextId -> {foo-123-foo}
browser.startup.homepage_override.buildID -> 20181001000000

• Cleaned up and removed more tracking parameters and unnecessary information (ex. locale) from various Mozilla links/URLs.

  app.support.baseURL -> https://support.mozilla.org/kb/
extensions.abuseReport.amoFormURL -> https://addons.mozilla.org/feedback/addon/%addonID%/
extensions.blocklist.addonItemURL -> https://addons.mozilla.org/blocked-addon/%addonID%/%addonVersion%/
extensions.getAddons.get.url -> https://services.addons.mozilla.org/api/v4/addons/search/?guid=%IDS%
extensions.update.background.url -> https://versioncheck-bg.addons.mozilla.org/update/VersionCheck.php?reqVersion=%REQ_VERSION%&id=%ITEM_ID%&version=%ITEM_VERSION%&status=%ITEM_STATUS%&appID=%APP_ID%&appVersion=%APP_VERSION%&updateType=%UPDATE_TYPE%
extensions.update.url -> https://versioncheck.addons.mozilla.org/update/VersionCheck.php?reqVersion=%REQ_VERSION%&id=%ITEM_ID%&version=%ITEM_VERSION%&status=%ITEM_STATUS%&appID=%APP_ID%&appVersion=%APP_VERSION%&updateType=%UPDATE_TYPE%
pdfjs.altTextLearnMoreUrl -> https://support.mozilla.org/kb/pdf-alt-text
signon.firefoxRelay.learn_more_url -> https://support.mozilla.org/kb/relay-integration#w_frequently-asked-questions
signon.firefoxRelay.privacy_policy_url -> https://www.mozilla.org/privacy/subscription-services/
signon.firefoxRelay.terms_of_service_url -> https://www.mozilla.org/privacy/subscription-services/

  ANDROID:

  extensions.getAddons.search.browseURL -> https://addons.mozilla.org/android/search?q=%TERMS%

  DESKTOP:

  app.releaseNotesURL -> https://www.mozilla.org/firefox/%VERSION%/releasenotes
app.releaseNotesURL.aboutDialog" -> https://www.mozilla.org/firefox/%VERSION%/releasenotes
app.releaseNotesURL.prompt -> https://www.mozilla.org/firefox/%VERSION%/releasenotes
app.update.url.details -> https://www.mozilla.org/firefox/notes
app.update.url.manual -> https://www.mozilla.org/firefox/new
browser.contentblocking.report.cookie.url -> https://support.mozilla.org/kb/trackers-and-scripts-firefox-blocks-enhanced-track#w_cross-site-tracking-cookies
browser.contentblocking.report.cryptominer.url -> https://support.mozilla.org/kb/trackers-and-scripts-firefox-blocks-enhanced-track#w_cryptominers
browser.contentblocking.report.fingerprinter.url -> https://support.mozilla.org/kb/trackers-and-scripts-firefox-blocks-enhanced-track#w_fingerprinters
browser.contentblocking.report.lockwise.how_it_works.url -> https://support.mozilla.org/kb/password-manager-remember-delete-edit-logins
browser.contentblocking.report.social.url -> https://support.mozilla.org/kb/trackers-and-scripts-firefox-blocks-enhanced-track#w_social-media-trackers
browser.contentblocking.report.tracker.url -> https://support.mozilla.org/kb/trackers-and-scripts-firefox-blocks-enhanced-track#w_tracking-content
browser.dictionaries.download.url -> https://addons.mozilla.org/language-tools/
browser.search.searchEnginesURL -> https://addons.mozilla.org/firefox/search-engines/
browser.xr.warning.infoURL -> https://support.mozilla.org/kb/webxr-permission-info-page
extensions.getAddons.link.url -> https://addons.mozilla.org/
extensions.getAddons.search.browseURL -> https://addons.mozilla.org/search?q=%TERMS%
lightweightThemes.getMoreURL -> https://addons.mozilla.org/themes/

• DESKTOP: Removed Mozilla's feedback URL & the about:home support article (which definitely isn't relevant to us...).

  app.feedback.baseURL ->
  browser.newtabpage.activity-stream.support.url ->

• Removed unnecessary partner attribution identifiers, to protect against fingerprinting.

  app.distributor ->
  app.distributor.channel ->
  mozilla.partner.id ->

  DESKTOP:

  browser.search.param.search_rich_suggestions ->

• DESKTOP: Disabled Mozilla's new Ad Routing Service (MARS) OHTTP provider & ad reporting.

  browser.newtabpage.activity-stream.discoverystream.reportAds.enabled -> false
browser.newtabpage.activity-stream.unifiedAds.ohttp.enabled -> false

• DESKTOP: Disabled Mozilla's new Firefox Suggest (Merino) OHTTP provider.

  browser.newtabpage.activity-stream.discoverystream.merino-provider.ohttp.enabled -> false

• DESKTOP: Disabled ('inferred') 'personalization' on about:home

  browser.newtabpage.activity-stream.discoverystream.sections.personalization.enabled -> false
browser.newtabpage.activity-stream.discoverystream.sections.personalization.inferred.enabled -> false
browser.newtabpage.activity-stream.discoverystream.sections.personalization.inferred.user.enabled -> false

• DESKTOP: Disabled new about:home mobile promotions.

  DESKTOP:

  browser.newtabpage.activity-stream.mobileDownloadModal.enabled -> false
browser.newtabpage.activity-stream.mobileDownloadModal.variant-a -> false
browser.newtabpage.activity-stream.mobileDownloadModal.variant-b -> false
browser.newtabpage.activity-stream.mobileDownloadModal.variant-c -> false`

• DESKTOP: Disabled the new about:home Fakespot promotion card.

  browser.shopping.experience2023.newPositionCard.hasSeen -> true

• DESKTOP: Disabled the 'Revised Pocket Story Card UI' on about:home

  See details: https://searchfox.org/mozilla-central/source/toolkit/components/nimbus/FeatureManifest.yaml

  browser.newtabpage.activity-stream.discoverystream.sections.cards.enabled -> false

• Enabled various performance optimizations.

  See details: https://codeberg.org/celenity/Phoenix/commit/6a7263d95b16d77c961e886248cc4f15f3ac8c8c + https://codeberg.org/celenity/Phoenix/commit/f4295b0baa3905b6527741a91e1a26808303ca9f

  network.fetchpriority.enabled -> true
javascript.options.mem.gc_parallel_marking -> true
javascript.options.wasm_branch_hinting -> true
javascript.options.wasm_relaxed_simd -> true
javascript.options.wasm_simd_avx -> true

• DESKTOP: Enabled advanced performance settings at about:preferences#general by default.

  browser.preferences.defaultPerformanceSettings.enabled -> false

• Lowered the network priority of known trackers (if not blocked...).

  
  

privacy.trackingprotection.lower_network_priority -> true

• Disabled the ability for websites to prevent disabling Picture-in-Picture.

  media.videocontrols.picture-in-picture.respect-disablePictureInPicture -> false

• DESKTOP: Enabled the ability to download and switch locales (as well as the ability to switch without restarting...

  intl.multilingual.downloadEnabled -> true
intl.multilingual.enabled -> true
intl.multilingual.liveReload -> true
intl.multilingual.liveReloadBidirectional -> true

• Ensured that uBlock Origin (if enabled) can always run on restricted/quarantined domains by default.

  extensions.quarantineIgnoredByUser.uBlock0@raymondhill.net -> true

• Disabled Mozilla's remote fingerprinting protection overrides by default (for now) to re-enable canvas randomization for Google domains

  See details: https://codeberg.org/celenity/Phoenix/commit/776c3921efbe355ce9ba4549c06a312ecb5447f6

  privacy.fingerprintingProtection.remoteOverrides.enabled -> false

• Disabled Mozilla's 'Remote Permissions' by default.

  See details: https://codeberg.org/celenity/Phoenix/commit/f203b52b1ae49cd3cf5dbfaa21df541e642c50a4

  permissions.manager.remote.enabled -> false

• DESKTOP: Temporarily switched the Web Compatibility Reporter URL from Mozilla's to our issue tracker, as it's currently impossible to fully disable it due to an upstream bug...

  See details: https://bugzilla.mozilla.org/show_bug.cgi?id=1963764

  ui.new-webcompat-reporter.new-report-endpoint -> https://phoenix.celenity.dev/issues

• DESKTOP: Stopped locking the value of 'security.cert_pinning.enforcement_level', to ensure users can still access the pinned domains if ex. certs are changed/become outdated.

• Various other changes...

  ---

Codeberg: See here for more details.

GitLab: See here for more details.

GitHub: See here for more details.

:)