Mozilla has added tracking protection to Firefox’s private browsing mode, so in addition to not saving your browsing history, Firefox will also block ads and other content on websites that are trying to track your every move.


Private browsing mode prevents your browsing history from being saved, but it doesn’t completely let you browse without a trace. Sites you visit even in private browsing mode can still try to collect data about you through ads, analytics trackers, social share buttons, and other web elements.

Firefox’s tracking protection is automatic when you go into private browsing mode on Windows, Mac, Android, or Linux. If a site doesn’t seem to work without those tracking elements, you can unblock them by turning off tracking protection for that particular site. In essence, this works like an ad-blocker for your private browsing sessions.


On the desktop, Firefox also now has tab audio indicators, so you can find which sites are being noisy and mute them in one click, without leaving your current tab. And on Android, you can now open links from apps in the background.

Learn more about the new tracking protection in the Mozilla blog post below. Venture Beat also offers a rundown of the changes in Firefox 42.

Firefox Now Offers a More Private Browsing Experience | The Mozilla Blog