[Webkit-unassigned] [Bug 273452] Safari privacy settings menu implies site-based partitioning model

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=273452

--- Comment #1 from John Wilander <wilander at apple.com> ---
WebKit is the open source web engine in several applications. For Safari application feedback, please use Apple's Feedback Assistant.

There are at least two ways to prevent cross-site tracking, either partition or block cross-site website data and cache. Since the least strict tracking prevention WebKit has is at the site level, specifically blocking cross-site cookies, it is correct to call the over all protection prevention of cross-site tracking.

The fact that WebKit has more strict preventions such as cross-origin partitioning doesn't change the fact that the prevention is only effective at the site level.

WebKit does not partition cookies. There is the CHIPS standards proposal which may result in a future where WebKit partitions cookies.

postMessage to share cross-origin same-site state, i.e. across subdomains, works with WebKit too. Let us know if that's not the case.

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