First-party isolation in Firefox: what breaks if you enable it?

Re:First-party isolation in Firefox: what breaks if you enab... by fredsir on Sunday September 09, 2018 @10:58AM (#17946180)

So after enabling it, is there some easy way to see if it actually works?

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Re:First-party isolation in Firefox: what breaks if you enab... by user812 on Sunday September 09, 2018 @02:56PM (#17947214)

Go into your FF profile, open SiteSecurityServiceState.txt - it will show every HSTS entry separated into firstparty domains.

Similar, in the storage folder in your FF profile you can see that every firstparty website has it's own folder and third party cookies are places inside that folder and can not share data with other folders.

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Re:First-party isolation in Firefox: what breaks if you enab... by bugmen0t on Sunday September 09, 2018 @05:29PM (#17947880)

Not super reliably. But try this one: https://github.com/mozfreddyb/test-firstpartyisolation

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Re:First-party isolation in Firefox: what breaks if you enab... by tomrittervg on Monday September 10, 2018 @01:39AM (#17949625)

I won't copy paste my reply from above, but rather link it: https://news.ycombinator.com/item?id=17949613

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