Security News > 2021 > October > Firefox improves advertising tracker blocking in private browsing
Mozilla says that Firefox users will be better protected from advertising trackers while browsing the Internet in Private Browsing mode and using Strict Tracking Protection.
The SmartBlock mechanism, introduced by Mozilla with the release of Firefox 87 in March, ensures that the Tracking Protection feature and Strict Mode don't break websites when blocking tracking scripts.
"As usual, these replacements are bundled with Firefox and can not track you in any way."
In June, it also enabled Total Cookie Protection by default in Private Browsing windows starting with Firefox 89, automatically protecting users from cross-site tracking.
To switch to private browsing, you have to open the Application Menu by clicking the button on the top right corner and choose "New Private Window."
When available system memory is critically low on Windows devices, Firefox will automatically unload browsing tabs based on their last access time, memory usage, and other attributes to reduce out-of-memory crashes.