Security News > 2021 > June > Firefox now blocks cross-site tracking by default in private browsing
Mozilla says that Firefox users will be protected against cross-site tracking automatically while browsing the Internet in Private Browsing mode.
This is because, starting with the Firefox 89 version released today, the Total Cookie Protection will be enabled by default in Private Browsing windows.
Total Cookie Protection is designed to force all websites to keep their cookies in separate "Jars," thus preventing them from tracking you across the web and building browsing profiles.
"This principle is now enforced in Firefox Private Browsing windows by creating a separate cookie jar for every website you visit."
To go into private browsing mode in Firefox, all you need to do is to open the Application Menu by clicking the button on the top right and then choosing "New Private Window."
Enabling Site Isolation is highly recommended given that it "Sandboxes web pages and web frames, isolating them from each other, further strengthening Firefox security."