8 ms·
Thank you. This does not support your claim, however. 1) That is an MD5 hash, not a perceptual hash. Apple is not using md5s. 2) It is a false positive, not b
by notJim 5y ago
Thank you. This does not support your claim, however.
1) That is an MD5 hash, not a perceptual hash. Apple is not using md5s.
2) It is a false positive, not bad info in the database. All involved acknowledge the possibility of false positives.
- pseudalopex 5y agoYou think an MD5 collision is more likely than a wrongly classified image? NCMEC generated the hashes Apple will use by running NCMEC's collection of forbidden media through Apple's algorithm. And perceptual hashes have more collisions than cryptographic hashes. Several people said the database includes non CSAM seized in investigations.[1] [1] https://news.ycombinator.com/item?id=28069844 https://news.ycombinator.com/item?id=28069844
- notJim 5y agoThanks, it sounds like you're definitely right.