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A comment on Apple enabling client-side CSAM scanning on iPhone tomorrow. Parent comment

Re:Apple enabling client-side CSAM scanning on iPhone tomorrow by josephcsible on Thursday August 05, 2021 @07:07PM (#28081241)
At least one of these two things must be true: either Apple is going to upload hashes of every image on your device to someone else's server, or the database of hashes will be available somehow to your device.
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Re:Apple enabling client-side CSAM scanning on iPhone tomorrow by josephcsible on Saturday August 07, 2021 @11:42PM (#28104042)
Turns out there's a third option I wasn't thinking about: private set intersection.

https://news.ycombinator.com/item?id=28097683

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