this post was submitted on 28 Aug 2024
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For those who don't care to read the full article:
This basically just confines any cookies generated on a page, to just that page.
So, instead of a cookie from, say, Facebook, being stored on site A, then requested for tracking purposes on site B, each individual site would be sent its own separate Facebook cookie, that only gets used on that site, preventing it from tracking you anywhere outside of the specific site you got it from in the first place.
I don't know why this wasn't the case long ago.
It increases implementation complexity of the browser and loses people who fund Firefox and contribute code $$$