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A comment on Hide a photo inside another photo.

Re:Hide a photo inside another photo by noasaservice on Thursday April 28, 2022 @05:25PM (#31198413)
Hmm.

So combined with Apple's CSAM scanner, you can put CSAM inside a cat photo... And then anonymously leak the cat photo and tool to show it's CSAM. And then the CSAM scanner will flag the hash and alert the police of the user.

And the target victim would never know.

[ Parent | on HN ]
Re:Hide a photo inside another photo by woodruffw on Thursday April 28, 2022 @05:48PM (#31198621)
This is substantially more complicated than finding a collision against the perceptual/“content aware” hash that Apple was planning on using.
[ Parent | on HN ]