This is pretty nifty.
Firefox 86, which was recently released by Mozilla, has added a new Total Cookie Protection privacy feature, which works as follows:
Total Cookie Protection works by maintaining a separate “cookie jar” for each website you visit. Any time a website, or third-party content embedded in a website, deposits a cookie in your browser, that cookie is confined to the cookie jar assigned to that website, such that it is not allowed to be shared with any other website.
If you’ve had a chance to try Firefox 86, please let us know about your experience in the comments.
Firefox 86 is available for free and requires macOS 10.12 Sierra or later to install and run.
Via The Mac Observer and blog.mozilla.org