What’s in the latest Firefox upgrade? New defense against supercookies

Mozilla this week upgraded Firefox to version 85, adding to its overarching emphasis on privacy by isolating supercookies that some sites rely on to track users’ movements on the web.

Engineers also patched 13 vulnerabilities, five of which were marked “High,” Firefox’s second-most-serious label.

Firefox 85 can be downloaded for Windows, macOS, and Linux from Mozilla’s site. Because Firefox updates in the background, most users can simply relaunch the browser to get the latest version. To manually update on Windows, pull up the menu under the three horizontal bars at the upper right, then click the help icon (the question mark within a circle). Choose “About Firefox.” (On macOS, “About Firefox” can be found under the “Firefox” menu.) The resulting page shows that the browser is either up to date or displays the refresh process.

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