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Guides - Privacy & Security Tips
How to configure Firefox to stop data leakage
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<blockquote data-quote="Petrovic" data-source="post: 405570" data-attributes="member: 7767"><p><span style="font-size: 15px">This list aims to block core Firefox features which actively leak data to third-party services (as opposed to attempts of sites to track you or otherwise passively collect information). As it isn't always easy to draw a strict line, the most critical passive data faucets like WebRTC are also mentioned.</span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px">To disable specific functionality open about:config and change the value to false.</span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px"><strong><a href="https://support.mozilla.org/en-US/kb/how-does-phishing-and-malware-protection-work" target="_blank">Google Safe Browsing</a></strong></span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px">Leaks the browsing history to Google. Note that disabling Safe Browsing exposes you to a risk of not being stopped from visiting malicious or phishing sites.</span></p><p><span style="font-size: 15px"></span></p><p><em><span style="font-size: 15px">browser.safebrowsing.enabled</span></em></p><p><em><span style="font-size: 15px">browser.safebrowsing.downloads.enabled</span></em></p><p><em><span style="font-size: 15px">browser.safebrowsing.malware.enabled</span></em></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px"><strong>Firefox stats collecting</strong></span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px"><a href="https://www.mozilla.org/en-US/privacy/firefox/#health-report" target="_blank">Stability and performance reports.</a></span></p><p><span style="font-size: 15px"></span></p><p><em><span style="font-size: 15px">datareporting.healthreport.service.enabled</span></em></p><p><em><span style="font-size: 15px">datareporting.healthreport.uploadEnabled</span></em></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px"><a href="https://www.mozilla.org/en-US/privacy/firefox/#telemetry" target="_blank">Usage statistics.</a></span></p><p><span style="font-size: 15px"></span></p><p><em><span style="font-size: 15px">toolkit.telemetry.enabled</span></em></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px"><strong><a href="https://wiki.mozilla.org/Media/EME" target="_blank">Encrypted Media Extensions (DRM)</a></strong></span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px">A binary plugin (closed-source) is shipped with Firefox since v38. It enables playback of encrypted media and lets you use e.g. Netflix without Microsoft Silverlight. To completely remove the plugin you would have to install an <a href="http://download.cdn.mozilla.net/pub/firefox/releases/latest/win32-EME-free/" target="_blank">EME-free</a> build of Firefox.</span></p><p><span style="font-size: 15px"></span></p><p><em><span style="font-size: 15px">media.eme.enabled</span></em></p><p><em><span style="font-size: 15px">media.gmp-eme-adobe.enabled</span></em></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px"><strong><a href="https://support.mozilla.org/en-US/kb/firefox-hello-video-and-voice-conversations-online" target="_blank">Firefox Hello</a></strong></span></p><p><span style="font-size: 15px">Firefox connects to third-party (Telefonica) servers without asking for permission.</span></p><p><span style="font-size: 15px"></span></p><p><em><span style="font-size: 15px">loop.enabled</span></em></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px"><strong><a href="https://support.mozilla.org/en-US/kb/save-web-pages-later-pocket-firefox" target="_blank">Pocket integration</a></strong></span></p><p><span style="font-size: 15px">A third-party service for managing a reading list of articles.</span></p><p><span style="font-size: 15px"></span></p><p><em><span style="font-size: 15px">browser.pocket.enabled</span></em></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px"><strong>Search suggestions</strong></span></p><p><span style="font-size: 15px">Everything you type in the search box is sent to the search engine. Suggestions based on local history will still work.</span></p><p><span style="font-size: 15px"></span></p><p><em><span style="font-size: 15px">browser.search.suggest.enabled</span></em></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px"><strong><a href="https://wiki.mozilla.org/Media/WebRTC" target="_blank">WebRTC</a></strong></span></p><p><span style="font-size: 15px">Leaks the real IP when using VPN/TOR. <a href="https://github.com/diafygi/webrtc-ips" target="_blank">Description and demo</a></span></p><p><span style="font-size: 15px"></span></p><p><em><span style="font-size: 15px">media.peerconnection.enabled</span></em></p><p><span style="font-size: 15px"></span></p><p><span style="font-size: 15px"><strong>Geolocation</strong></span></p><p><span style="font-size: 15px"></span></p><p><em><span style="font-size: 15px">geo.enabled</span></em></p><p></p><p><a href="https://github.com/amq/firefox-debloat" target="_blank"><span style="font-size: 15px">Full Article</span></a></p></blockquote><p></p>
[QUOTE="Petrovic, post: 405570, member: 7767"] [SIZE=4]This list aims to block core Firefox features which actively leak data to third-party services (as opposed to attempts of sites to track you or otherwise passively collect information). As it isn't always easy to draw a strict line, the most critical passive data faucets like WebRTC are also mentioned. To disable specific functionality open about:config and change the value to false. [B][URL='https://support.mozilla.org/en-US/kb/how-does-phishing-and-malware-protection-work']Google Safe Browsing[/URL][/B] Leaks the browsing history to Google. Note that disabling Safe Browsing exposes you to a risk of not being stopped from visiting malicious or phishing sites. [/SIZE] [I][SIZE=4]browser.safebrowsing.enabled browser.safebrowsing.downloads.enabled browser.safebrowsing.malware.enabled[/SIZE][/I] [SIZE=4] [B]Firefox stats collecting[/B] [URL='https://www.mozilla.org/en-US/privacy/firefox/#health-report']Stability and performance reports.[/URL] [/SIZE] [I][SIZE=4]datareporting.healthreport.service.enabled datareporting.healthreport.uploadEnabled[/SIZE][/I] [SIZE=4] [URL='https://www.mozilla.org/en-US/privacy/firefox/#telemetry']Usage statistics.[/URL] [/SIZE] [I][SIZE=4]toolkit.telemetry.enabled[/SIZE][/I] [SIZE=4] [B][URL='https://wiki.mozilla.org/Media/EME']Encrypted Media Extensions (DRM)[/URL][/B] A binary plugin (closed-source) is shipped with Firefox since v38. It enables playback of encrypted media and lets you use e.g. Netflix without Microsoft Silverlight. To completely remove the plugin you would have to install an [URL='http://download.cdn.mozilla.net/pub/firefox/releases/latest/win32-EME-free/']EME-free[/URL] build of Firefox. [/SIZE] [I][SIZE=4]media.eme.enabled media.gmp-eme-adobe.enabled[/SIZE][/I] [SIZE=4] [B][URL='https://support.mozilla.org/en-US/kb/firefox-hello-video-and-voice-conversations-online']Firefox Hello[/URL][/B] Firefox connects to third-party (Telefonica) servers without asking for permission. [/SIZE] [I][SIZE=4]loop.enabled[/SIZE][/I] [SIZE=4] [B][URL='https://support.mozilla.org/en-US/kb/save-web-pages-later-pocket-firefox']Pocket integration[/URL][/B] A third-party service for managing a reading list of articles. [/SIZE] [I][SIZE=4]browser.pocket.enabled[/SIZE][/I] [SIZE=4] [B]Search suggestions[/B] Everything you type in the search box is sent to the search engine. Suggestions based on local history will still work. [/SIZE] [I][SIZE=4]browser.search.suggest.enabled[/SIZE][/I] [SIZE=4] [B][URL='https://wiki.mozilla.org/Media/WebRTC']WebRTC[/URL][/B] Leaks the real IP when using VPN/TOR. [URL='https://github.com/diafygi/webrtc-ips']Description and demo[/URL] [/SIZE] [I][SIZE=4]media.peerconnection.enabled[/SIZE][/I] [SIZE=4] [B]Geolocation[/B] [/SIZE] [I][SIZE=4]geo.enabled[/SIZE][/I] [URL='https://github.com/amq/firefox-debloat'][SIZE=4]Full Article[/SIZE][/URL] [/QUOTE]
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