Disable Telemetry and Data Collection

1. Access Firefox Configuration:

   • Open Firefox and type about:config in the address bar, then press Enter.
   • Accept the warning message by clicking on "Accept the Risk and Continue."

2. Modify Preferences:

   • Search for each of the following preferences and set them to the specified values:

   Preference	Value
   browser.newtabpage.activity-stream.feeds.telemetry	false
   browser.newtabpage.activity-stream.telemetry	false
   browser.ping-centre.telemetry	false
   datareporting.healthreport.service.enabled	false
   datareporting.healthreport.uploadEnabled	false
   datareporting.policy.dataSubmissionEnabled	false
   devtools.onboarding.telemetry.logged	false
   toolkit.telemetry.archive.enabled	false
   toolkit.telemetry.bhrPing.enabled	false
   toolkit.telemetry.enabled	false
   toolkit.telemetry.firstShutdownPing.enabled	false
   toolkit.telemetry.hybridContent.enabled	false
   toolkit.telemetry.newProfilePing.enabled	false
   toolkit.telemetry.prompted	2 (Number Value)
   toolkit.telemetry.rejected	true
   toolkit.telemetry.reportingpolicy.firstRun	false
   toolkit.telemetry.server	Delete URL
   toolkit.telemetry.shutdownPingSender.enabled	false
   toolkit.telemetry.unified	false
   toolkit.telemetry.unifiedIsOptIn	false
   toolkit.telemetry.updatePing.enabled	false
   browser.newtabpage.activity-stream.discoverystream.merino-provider.enabled	false
   browser.newtabpage.activity-stream.discoverystream.merino-provider.endpoint	Delete URL
   browser.urlbar.merino.endpointURL	Delete URL
   extensions.pocket.enabled	false
   app.normandy.enabled	false
   app.normandy.api_url	Delete URL
   services.sync.autoconnect	false
   services.sync.engine.addons	false
   services.sync.engine.bookmarks	false
   services.sync.engine.history	false
   services.sync.engine.passwords	false
   services.sync.engine.prefs	false
   services.sync.engine.tabs	false
   browser.safebrowsing.blockedURIs.enabled	false
   browser.safebrowsing.malware.enabled	false
   browser.safebrowsing.phishing.enabled	false
   browser.safebrowsing.downloads.enabled	false
   browser.topsites.contile.enabled	false
   browser.topsites.contile.endpont	Delete URL
   browser.contile.sov.enabled	false
   privacy.trackingprotection.enabled	false

Disable Captive Portal Detection

1. Disable Captive Portal Service:
   • In the about:config page, search for network.captive-portal-service.enabled.
   • Set this preference to false to stop Firefox from checking for captive portals[4].

Additional Settings

1. Disable Other Automatic Connections:
   • Consider disabling other automatic connections that Firefox might make, such as Safe Browsing, Enhanced Tracking Protection and certificate revocation checks, through the Privacy & Security settings in about:preferences[7].

Sources [1] How to disable Firefox Telemetry and Data Collection - GitHub https://github.com/K3V1991/Disable-Firefox-Telemetry-and-Data-Collection [2] How can you filter out "noise" like Firefox telemetry in Burp Proxy ... https://www.reddit.com/r/AskNetsec/comments/g3qvuj/how_can_you_filter_out_noise_like_firefox/ [3] Mozilla does not respect user requests to stop tracking telemetry data https://www.privateinternetaccess.com/blog/mozilla-does-not-respect-user-requests-to-stop-tracking-telemetry-data/ [4] Towards a Quieter Firefox - Black Hills Information Security https://www.blackhillsinfosec.com/towards-quieter-firefox/ [5] Disable telemetry : r/firefox - Reddit https://www.reddit.com/r/firefox/comments/139zp0j/disable_telemetry/ [6] 1850243 - We need easy settings to totally disable telemetry https://bugzilla.mozilla.org/show_bug.cgi?id=1850243 [7] Silencing Firefox's Chattiness for Web App Testing - Secure Ideas https://www.secureideas.com/blog/2018/10/silencing-firefoxs-chattiness-for-web-app-testing.html