251–260 of 363 posts
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How does one choose individual photos to not upload?
You store the photos you want to keep private in another app. I'm sure there are lots in the App Store. Still waiting on that citation.
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I would gladly have a mobile phone full of memes that have been modified to match, just for the lulz. I honestly think every meme should be put through just to have "illegal memes"
Illegal memes. Finally. Illegal Pepe will be the crowning jewel of my rare Pepe collection.
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> A hash collision allows you to create material that matches CSAM signatures, without being CSAM. This is not correct. Hash collisions won’t match the visual derivative.
Sorry, this is not even wrong. The visual derivative is just a resized, very-low-resolution version of the uploaded image. "Matching the visual derivative" is completely meaningless. The visual derivative is not matched against anything, and there is no "original" visual derivative to match against. If enough signatures match, Apple employees can decrypt the visual derivatives, and see if these extremely low resoluti…
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I think the realistic danger here is the US Government no longer needs to compel this type of activity. Reference Twitter and Facebook/Instagram voluntarily censorship per mere suggestion of the current administration/power party.
Let's be practical for a minute. What specific image would Apple voluntarily search for on behalf of the US Government? I sincerely can't think of anything.
All things current at social media companies seem willing to censor after suggestion of the administration.
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I believe being downvoted because this is thoroughly covered in the thread. Suggest you read it all again.
I did my best skimming comments the algorithm showed me, including related posts' comments. But man am I bad at reading comprehension. If I miss anything then surely I am willing to be corrected. But so far I don't see comments that show us how to penetrate the four-layer system (local hash check, semantic check by user, on-server hash check, and human reviewer).
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Before they make it to human review, photos in decrypted vouchers have to pass the CSAM match against a second classifier that Apple keeps to itself. Presumably, if it doesn’t match the same asset, it won’t be passed along. This is explained towards the end of the threat model document that Apple posted to its website. https://www.apple.com/child-safety/pdf/Security_Threat_Model...
How...exactly did they train that CSAM classifier? Seeing as that training data would be illegal. I'd be most interested in an answer on that one. They are willing to make that training data set a matter of public record on the first trial, yes? Or are we going to say secret evidence is just fine nowadays? Bloody mathwashing.
Apple defends anti-child abuse imagery tech after claims of ‘hash collisions’ - https://news.ycombinator.com/item?id=28225706 - Aug 2021 (401 comments)
Hash collision in Apple NeuralHash model - https://news.ycombinator.com/item?id=28219068 - Aug 2021 (662 comments)
Convert Apple NeuralHash model for CSAM Detection to ONNX - https://news.ycombinator.com/item?id=28218391 - Aug 2021 (177 comments)
(I just mean related to this particular project. To list the threads related to larger topic would be...too much.)
So, what does Apple get out of all this, except negative attention, erosion of their image, possible privacy lawsuits, etc? I just don't understand what Apple's motivation would have been here. Surely this fallout could have been anticipated?
My guess is that internally, they've realized they have a big CP problem on iCloud. That's a huge liability.
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What happens if someone leaks or guesses the weights on that "secret" classifier? The whole system is so ridiculous even before considering the amount of shenanigans the FBI could pull by putting in non-CSAM hashes.
Can't they just make a new one and recompute the 2nd secret hash on the whole data set fairly easily? Also, the whole point is that it's fairly easy to create a fake image that collides with one hash, but doing it for 2 is exponentially harder. It's hard to see how you could have an image that collides with both hashes (of the same image mind you).
Of course, it won't be public (and if it ever became public they'd replace it with a different secret hash).
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Let's be practical for a minute. What specific image would Apple voluntarily search for on behalf of the US Government? I sincerely can't think of anything.
Images, leaked government files, anti-administration phrases, unflattering memes of the president, statements that contradict the government's current stance, etc. All things current at social media companies seem willing to censor after suggestion of the administration.
I don't think you're being serious.