The changes we're making in Firefox 85 greatly reduce the effectiveness of cache-based supercookies by eliminating a tracker's ability to use them across websites.' 'Over the years, trackers have been found storing user identifiers as supercookies in increasingly obscure parts of the browser, including in Flash storage, ETags, and HSTS flags.

This makes it nearly impossible for users to protect their privacy as they browse the web,' writes Mozilla. 'In short, supercookies can be used in place of ordinary cookies to store user identifiers, but they are much more difficult to delete and block. There's no setting to re-enable support in Firefox 85.Įlsewhere, Firefox 85 is crushing supercookies. The move has been a long time coming Mozilla disabled the Flash plugin by default in 2019.īack in 2017, Adobe itself was one of several tech giants to announce it would no longer support Flash Player after 2020, with better and secure options such as HTML5, WebGL, and WebAssembly taking its place.īoth Chrome and Edge dropped support for Flash this month. What just happened? Those who prefer Mozilla's Firefox over the likes of Chrome will be pleased to hear that the latest version of the browser has arrived, bringing protection from supercookies and finally removing Adobe Flash Player support.īy killing off Flash in Firefox 85 ( download here), Adobe's once universally popular software is now no longer supported on any major browsers.

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