if it’s img hash comparison 1. no need to upload the img (calculate hash client-side and send that) 2. can be bypassed by changing 1 pixelhttps://twitter.com/lorenzofb/status/928014255466668032 …
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Replying to @bcrypt
apparently they're planning on using photodna, which is tolerant to some degree (not aware of a real whitepaper) of trivial mods
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Replying to @alicemazzy @bcrypt
if done clientside there's nothing stopping me from submitting arbitrary hash-alikes to blacklist but I guess they could check...
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Replying to @alicemazzy @bcrypt
...whatever it would end up blocking if/when it got a match
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Replying to @alicemazzy @bcrypt
interesting twist is when someone inevitably submits legitimately risque photos of someone else to get their posts removed
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Replying to @alicemazzy @bcrypt
and fb has to decide whether to apply its autotagging system for authentication purposes
2:03 PM - 7 Nov 2017
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