• asdfasdfasdf@lemmy.world
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    5 days ago

    How do they know what qualifies as “encrypted” vs a binary blob that could be a photo or something?

    • Semperverus@lemmy.world
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      4 days ago

      File headers, magic bits, all sorts of stuff. Plus you can (and they do) try to load common file types, so if a PNG isn’t loading correctly, it fails the test.