Mozilla recently announced that it has extended its ‘total cookie protection’ feature for Firefox 89 that offers extra-strong protection against cross-site tracking cookies to Private Browsing windows. The details were published by Mozilla in a blog post.

“At Mozilla, we believe that your right to privacy is fundamental. Unfortunately, for too long cookies have been used by tracking companies to gather data about you as you browse the web. Today, with the launch of Firefox 89, we are happy to announce that Firefox Private Browsing windows now include our innovative Total Cookie Protection by default,” states Mozilla.

As described in the blog, Firefox’s Total Cookie Protection is a set of “privacy improvements” based on a principle that your browser should not allow sharing of cookies between websites. It’s now enforced in Firefox Private Browsing windows and helps by creating a separate cookie jar for every website that the user visits. This helps keep cookies confined to that particular website and cannot be used by companies to follow the user from one site to other for tracking browsing history.

 
Moreover, this feature also covers a slew of other browser technologies that could be used previously for cross-site tracking. However, the feature will allow sharing of cookies if needed for cross-site logins or related cross-site functionality.

Mozilla further states that Firefox’s Private Browsing windows have a slew of other privacy protections by default. For users who already have Firefox installed, they can open a private browsing window by clicking on the Application Menu button (☰) and choosing the “New Private Window” option.