By default, Mozilla Firefox 89 block cross-site cookie tracking in private browsing

Mozilla Firefox 89
Mozilla Firefox 89

Mozilla has extended its cross-site tracking protection for all Firefox users who access the Web through a private browsing window. The change is achieved through a security feature called “Full Cookie Protection”, which is enabled by default in the latest version of Firefox 89. Mozilla stated that its Total Cookie Protection is based on the principle of restricting the Firefox browser to share Web cookies between websites and storing them in different “cookie jars” to help protect user identities to a certain extent. 

Full cookie protection was first provided to users who enabled Enhanced Tracking Protection (ETP) strict mode in Firefox 86 in February. However, Mozilla has now expanded its usability and enable it by default for all users in Firefox 89. By enabling full cookie protection by default, Mozilla stated in a blog post that each website you visit in a private browsing window will receive a separate cookie. In the jar, Firefox will only keep cookies on that site. This is different from the traditional method of web browsers that allow websites to share cookies.

“Comprehensive cookie protection covers not only cookies, but also various browser technologies that were previously available for cross-site tracking,” said the non-profit organization. However, there are some exceptions. Mozilla said the new feature allows cookies to be shared between websites when required for cross-site login and any similar cross-site functionality. 

You do not need to take any specific actions to enter the new security environment and everything you need. What you need to do is switch to the private browsing window to achieve complete cookie protection. You can open the private browsing window by clicking the “Application Menu” button and then selecting the “New Privacy Window” option. Or, you can press CTRL + SHIFT + P on a Windows computer or CTRL + SHIFT + P on a Mac computer to switch to the private browsing window.

In addition to full cookie protection, Firefox has a series of features enabled by default when using private browsing sessions. These include super cookie protection to prevent supercookies from tracking you from one site to another, and SmartBlock to repair web pages that were previously damaged when tracking scripts were blocked. 

The browser in private browsing also blocks items including cookies, scripts, tracking pixels, etc. Disconnect domain resources in the list of known crawlers. Once the private browsing session ends, it will also restrict fingerprint scripts and clear cookies and cache.

Alongside the default protection layer against cross-site cookie sharing, Firefox 89 comes with a redesigned experience that brings a cleaner Web browsing experience. It has detached tabs and simpler navigation. The updated browser is available for download on desktops.

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