this post was submitted on 28 Aug 2024
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[–] [email protected] 5 points 2 weeks ago (8 children)

Does this stop me from adding to my website an iframe to facebook where facebook can keep its cookies for my user? That would be great but I doubt it.

[–] [email protected] 5 points 2 weeks ago (4 children)

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

[–] [email protected] 2 points 2 weeks ago (1 children)

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.

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