Re: [csswg-drafts] [css-fonts] incorporate mitigations for font based fingerprinting (#4055)

Safari, too, has different fonts for different internationalizations. My strategy when implementing this fingerprinting mitigation in Safari wasn't to treat every user the same; that would have made many of our users' lives worse. Instead, my goal was to limit the number of equivalence classes a user could fall into. Before the mitigation, a user could be in a class of one, thereby being uniquely identified. After the mitigation, there are still multiple equivalence classes, but there are only a handful. Each equivalence class has many, many users, thereby significantly reducing the number of bits of entropy.

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Received on Tuesday, 25 June 2019 04:41:41 UTC