Firefox 86, introduced recently by Mozilla, adds a new privacy feature called Total Cookie Protection.
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.
Check It Out: Firefox 86 Introduces ‘Total Cookie Protection’ Privacy Feature
That is a great feature. Hope Safari adopts something like that.