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Except that there's a threshold involved. A single matching file doesn't trigger an investigation; it takes multiple (10+, maybe more?) matches to do that.
by duskwuff 5y ago
Except that there's a threshold involved. A single matching file doesn't trigger an investigation; it takes multiple (10+, maybe more?) matches to do that.
- kemayo 5y agoIn the interview Craig Federighi gave on Friday, he said 30.[1] I have no idea if he was just throwing a number out or if that's the actual threshold. [1]: https://tidbits.com/2021/08/13/new-csam-detection-details-emerge-following-craig-federighi-interview/ https://tidbits.com/2021/08/13/new-csam-detection-details-em...
- duskwuff 5y agoEither way, it's high enough that adding a single file to the set wouldn't be a useful way of finding people who have that file. One attack I can imagine would be to add a whole set of closely related photos (e.g. images posted online by a known dissident) to identify the person who took them, and even that would be a stretch.