Tuesday, June 14, 2022

Firefox Total Cookie Protection

Mozilla (Hacker News, MacRumors):

Starting today, Firefox is rolling out Total Cookie Protection by default to all Firefox users worldwide, making Firefox the most private and secure major browser available across Windows, Mac and Linux. Total Cookie Protection is Firefox’s strongest privacy protection to date, confining cookies to the site where they were created, thus preventing tracking companies from using these cookies to track your browsing from site to site.


Total Cookie Protection works by creating a separate “cookie jar” for each website you visit. Instead of allowing trackers to link up your behavior on multiple sites, they just get to see behavior on individual sites. 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 only that website. No other websites can reach into the cookie jars that don’t belong to them and find out what the other websites’ cookies know about you — giving you freedom from invasive ads and reducing the amount of information companies gather about you.

John Wilander:

Firefox finally gets full third-party cookie partitioning. I don’t know why tech media got it wrong up until now, saying Firefox had strong cookie protections by default. But now they got it done! 🥳❤️

Brendan Eich:

Glad Mozilla is joining best-in-class @Brave by shipping Firefox storage partitioning by default. Brave has shipped these protections by default, on all platforms, for 6+ months. More browsers shipping more on-by-default privacy protections benefits everyone who uses the Web.


[Private Click Measurement] is already available as part of iOS 15, but it needs websites to use its API in order to function.


As fine as that sounds, an in-depth report claims that the mechanisms used by PCM aren't sufficient to protect users in the ways Apple is trying to, while making it more difficult for advertisers and removing any incentive for web publishers to use it.


Mozilla goes so far as to say that if Firefox included support for PCM in lieu of its own Toral Cookie Protection, it would actually make it less private.

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