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In Firefox, setting

    browser.cache.disk.enable
    browser.cache.memory.enable
to false, seems to stop some of this from working. The last visit date still works, but the text storage and number of visits does not.



It's not a perfect solution, though. You're going to stick out as one of those people who disabled their cache entirely. You mitigated this exploit, at the cost of increasing your browser fingerprint entropy. Ideally you want to clear your cache when you clear your cookies.


How can a website detect a disabled cache vs. the cache being full, for example?




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