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Firefox rolls out Total Cookie Protection by default to all desktop users worldwide | It is Firefox’s strongest privacy protection to date, confining cookies to the site where they were created (blog.mozilla.org)

submitted 2 months ago by ForgottenFlux@lemmy.world to c/technology@lemmy.world

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[-] monogram@feddit.nl 5 points 2 months ago

IIRC an iframe contents is treated as a separate window, so cookies aren’t shared either

[-] Feyd@programming.dev 6 points 2 months ago

https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage

[-] monogram@feddit.nl 2 points 2 months ago

That’s horrific WHY?

do not add any event listeners for message events. This is a completely foolproof way to avoid security problems. 🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡🤡

[-] Cosmicomical@lemmy.world 2 points 2 months ago

Sure, but the separate window can be on a different domain. Now you have a way to share cookies across multiple websites on different domains if all of them include an iframe to this external domain. And you can use in-browser messages (see window.postMessage()) to communicate between iframes and main window.

[-] monogram@feddit.nl 2 points 2 months ago

Indeed see sibling comment https://programming.dev/comment/11983146

this post was submitted on 28 Aug 2024

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