Your privacy always comes first.
Unlike many other browsers where sensitive user data is routinely collected and stored, Firefox is built on the principle that not even Mozilla should know which websites you visit or what you do there.
For example, when you sync your history or bookmarks, Firefox has to send data to Mozilla servers so you can seamlessly access them across devices. The difference is, we use end-to-end encryption before it leaves your device, so even we can’t see what sites you’re visiting.
You’re automatically protected.
Firefox’s Enhanced Tracking Protection (ETP) and Total Cookie Protection (TCP) work together to protect you from the tracking tech that follows you from site to site, most often without your knowledge or consent. Firefox cuts off cross-site tracking right at the source by locking cookies to the site where they were created. So you stay private without needing to change a single setting.