Switch it on and you’ll get tracking protection that blocks code from those ads and social services that follow you from site to site. There’s also a central control panel on the desktop for managing privacy and security, including the option to turn tracking protection off if it’s breaking an important page.
There are a few more perks, too, depending on what platform you’re running. Desktop users now have a one-click option to mute audio in tabs, much your friends using Chrome. On Android, you can get both direct voice searching from the address bar as well as kid-safe browsing on a tablet’s restricted profile. The upgraded Firefox is available now on all platforms, so give it a shot if you’re interested in any of the new features — especially if you don’t want the internet looking over your shoulder.