[Webkit-unassigned] [Bug 175232] Resource Load Statistics: 5 second delay of prevalent site cookie purging causes cookie churn for domains expecting one-in-all-in behavior, with potentially drastic server-side resource impact

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=175232

Jack Wellborn <w0nka at mac.com> changed:

           What    |Removed                     |Added
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                 CC|                            |w0nka at mac.com

--- Comment #1 from Jack Wellborn <w0nka at mac.com> ---
Seconding this concern/recommendation. From the perspective of using a 3rd party cookie  for cross-site analytics, the previous behavior is predictable where as ITP is not. Worse it risks of data corruption. Because ITP allows a cookie to get set by a third party on iOS/Safari 11 and because there is way of knowing whether the cookie being set will truly be persistent or partitioned/shortened via ITP, many solutions will simply treat the ITP cookie as any other 3rd party cookie and start seeing inflation of uniques, etc... This leaves the only solution to do browser check for Safari and not drop a cookie, which is no better than if Safari still just blocked the third party cookie.

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