This post introduces the isolation feature in Firefox and describes how to enable it in the different Firefox versions before the official release later this year.

»Starting with Firefox 87, we set the default Referrer Policy to 'strict-origin-when-cross-origin' which will trim user sensitive information accessible in the URL.«

This post's authors provide insight into Mozilla's fuzzing-pipeline, including links to the open-source tools in use.

Nazım Can Altınova explains how to use the Firefox profiler for performance analysis.