Enhanced Tracking Protection in Firefox automatically protects your privacy while you browse.
Blocks many common trackers and harmful scripts and reduces the ability of third parties to collect data about your browsing behavior
Some advertisers use third-party cookies to track your visits to the various websites on which they advertise. Learn more.
SmartBlock lets pages load more fully, with less breakage -- all while keeping those tracking scripts blocked.
Firefox users have access to Total Cookie Protection in Nightly, ETP Strict Mode or private browsing windows.
Cookies and site data are stored on your computer by websites you visit. Learn how to block websites from storing this data in Firefox.
This article describes how to troubleshoot problems that involve websites reporting that cookies are blocked or disabled.
Fingerprinting Protection is an experimental feature that is under heavy development in Firefox.