Firefox rolls out Total Cookie Protection by default to all users worldwide

Starting today, Firefox is rolling out Total Cookie Protection by default to all Firefox users worldwide, making Firefox the most private and secure major browser available across Windows, Mac and Linux. Total Cookie Protection is Firefox's strongest privacy protection to date, confining cookies to the site where they were created, thus preventing tracking companies from using these cookies to track your browsing from site to site.

Whether it’s applying for a student loan, seeking treatment or advice through a health site, or browsing an online dating app, massive amounts of your personal information is online - and this data is leaking all over the web. The hyper-specific-to-you ads you so often see online are made possible by cookies that are used to track your behavior across sites and build an extremely sophisticated profile of who you are.

What is Total Cookie Protection?

Total Cookie Protection works by creating a separate “cookie jar” for each website you visit. Instead of allowing trackers to link up your behavior on multiple sites, they just get to see behavior on individual sites. Any time a website, or third-party content embedded in a website, deposits a cookie in your browser, that cookie is confined to the cookie jar assigned to only that website. No other websites can reach into the cookie jars that don't belong to them and find out what the other websites' cookies know about you - giving you freedom from invasive ads and reducing the amount of information companies gather about you.

This approach strikes the balance between eliminating the worst privacy properties of third-party cookies - in particular the ability to track you - and allowing those cookies to fulfill their less invasive use cases (e.g. to provide accurate analytics). With Total Cookie Protection in Firefox, people can enjoy better privacy and have the great browsing experience they've come to expect. 

Source: Official Mozilla Blog