How to enable First-Party Isolation in Firefox - gHacks Tech News
2017-11-22T10:08:18+01:00about:config?filter=privacy.firstparty.isolate
privacy.firstparty.isolate = true
privacy.firstparty.isolate.restrict_opener_access = true
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privacy.firstparty.isolate = true
privacy.firstparty.isolate.restrict_opener_access = true
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