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> because a person will look at your picture(yes, a random person somewhere will look at the pictures of your newborn) No. If the number of matches to known CS

by FabHK 5y ago

> because a person will look at your picture(yes, a random person somewhere will look at the pictures of your newborn) No. If the number of matches to known CSAM in your library exceeds a threshold, then a person will look at a "visual derivative" of only those pictures whose perceptual hatch match that of known CSAM. Note that, if I understand correctly, pictures that Android users sync to Google have already been scanned for some time. Where are all those false positives?

gambiting 5y ago
>>the number of matches to known CSAM in your library exceeds a threshold, then a person will look at a "visual derivative" of only those pictures whose perceptual hatch match that of known CSAM Apple very specifically said that their employees will look at the suspected picture before sending it through to authorities. Where do you see the bit about visual derivatives? What would that even mean or look like? Also what is this threshold? As others have pointed out, us parents have literally hundreds of pictures of our newborns, toddlers and kids - having to trigger some detector "multiple" times doesn't give me any peace of mind at all. >>Where are all those false positives? Google doesn't use perceptual hashing, or at least haven't said they do.
- FabHK 5y ago
  > Where do you see the bit about visual derivatives? In Apple's white paper about the proposed feature: https://www.apple.com/child-safety/pdf/CSAM_Detection_Technical_Summary.pdf https://www.apple.com/child-safety/pdf/CSAM_Detection_Techni... See the links at the bottom here for more: https://www.apple.com/child-safety/ https://www.apple.com/child-safety/ > Also what is this threshold? The "perceptual hash" is supposed to match a specific image (though possibly cropped, or otherwise altered a bit, such as through a filter), not "toddlers" per se. > Google doesn't use perceptual hashing, or at least haven't said they do. I don't know what the other cloud providers are doing, but I'd be very surprised if they use (trivially circumventable) cryptographic hashes.
- deleted 5y ago
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by FabHK 5y ago

gambiting 5y ago

>>the number of matches to known CSAM in your library exceeds a threshold, then a person will look at a "visual derivative" of only those pictures whose perceptual hatch match that of known CSAM Apple very specifically said that their employees will look at the suspected picture before sending it through to authorities. Where do you see the bit about visual derivatives? What would that even mean or look like? Also what is this threshold? As others have pointed out, us parents have literally hundreds of pictures of our newborns, toddlers and kids - having to trigger some detector "multiple" times doesn't give me any peace of mind at all. >>Where are all those false positives? Google doesn't use perceptual hashing, or at least haven't said they do.

FabHK 5y ago
> Where do you see the bit about visual derivatives? In Apple's white paper about the proposed feature: https://www.apple.com/child-safety/pdf/CSAM_Detection_Technical_Summary.pdf https://www.apple.com/child-safety/pdf/CSAM_Detection_Techni... See the links at the bottom here for more: https://www.apple.com/child-safety/ https://www.apple.com/child-safety/ > Also what is this threshold? The "perceptual hash" is supposed to match a specific image (though possibly cropped, or otherwise altered a bit, such as through a filter), not "toddlers" per se. > Google doesn't use perceptual hashing, or at least haven't said they do. I don't know what the other cloud providers are doing, but I'd be very surprised if they use (trivially circumventable) cryptographic hashes.
deleted 5y ago
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