_____      _                         ______
|  __ \    (_)                       |  ____|
| |__) | __ ___   ____ _  ___ _   _  | |__ _____  __
|  ___/ '__| \ \ / / _` |/ __| | | | |  __/ _ \ \/ /
| |   | |  | |\ V / (_| | (__| |_| | | | | (_) >  <
|_|   |_|  |_| \_/ \__,_|\___|\__, | |_|  \___/_/\_\
                               __/ |
                              |___/

PrivacyFox tweaks various preferences in Firefox in order to enhance the privacy of users; it will also try to enforce these changes to maintain your privacy online.

Affected Preferences

Preference	Default	New	Description
media.peerconnection.enabled	true	false	WebRTC can leak a users IP address from behind a VPN or proxy.
network.websocket.enabled	true	false	Websockets can cause some dns requests to not be send over the active proxy.
network.http.sendRefererHeader	2	0	Tells the server which page the user came from.
network.http.sendSecureXSiteReferrer	true	false	Tells the server which https page the user came from.
network.dnsCacheEntries	400	100	Number of cached DNS entries (lower number=more requests but less data stored).
privacy.trackingprotection.enabled	false	true	This is Mozilla’s new built in tracking protection.
dom.event.clipboardevents.enabled	true	false	Websites can get notifications if you copy, paste, or cut something from a web page, and it lets them know which part of the page had been selected.
dom.event.contextmenu.enabled	true	false	Disables website control over rightclick context menu.
geo.enabled	true	false	Disables geolocation.
geo.wifi.logging.enabled	true	false	Disables logging geolocation requests.
browser.formfill.enable	true	false	Disables saving of formdata.
browser.safebrowsing.enabled	true	false	Disable Google Safe Browsing and phishing protection. Security risk, but privacy improvement.
browser.safebrowsing.malware.enabled	true	false	Disable Google Safe Browsing malware checks. Security risk, but privacy improvement.
browser.send_pings	true	false	Allows websites to track users clicks.
browser.cache.disk.enable	true	false	Disables caching on hardrive.
browser.cache.disk_cache_ssl	true	false	Disables caching for ssl connections.
browser.cache.offline.enable	true	false	Disables the offline disk cache.
webgl.disabled	false	true	WebGL is a potential security risk.

References

STUN IP Address requests for WebRTC

Firefox security bug (proxy-bypass) in current TBBs

Tracking Protection in Firefox

Quantifying the effects of Firefox's Tracking Protection

Is WebGL a security concern?

DNS Prefetching and Its Privacy Implications