Mozilla has begun rolling out a new security feature for its Firefox browser that aims to protect users against side-channel attacks from malicious sites. Called “Site Isolation,” the implementation loads each website separately in its own operating system process. Site Isolation prevents untrusted code from a rogue website from accessing confidential information stored in other sites. Users running Firefox Nightly builds can enable the feature by navigating to “about:preferences#experimental” Mozilla’s Anny Gakhokidze said.
Source: https://thehackernews.com/2021/05/mozilla-begins-rolling-out-site.html