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A comment on Google’s Role In Woodland Child Pornography Arrest Raises Privacy Concerns.

Re:Google’s Role In Woodland Child Pornography Arrest Raises... by kmfrk on Sunday November 24, 2013 @01:45PM (#6790539)
From how I read it: Google match all images to a database of file hashes.

I wonder whether they do it for redundancy purposes like Dropbox, or whether it's entirely to crack down on child pornography.

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Re:Google’s Role In Woodland Child Pornography Arrest Raises... by duskwuff on Sunday November 24, 2013 @03:05PM (#6790880)
See: http://www.missingkids.com/Exploitation/Industry

There is apparently both a database of MD5 hashes of "known bad" image files, as well as a "PhotoDNA" system for fuzzy image matching.

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Re:Google’s Role In Woodland Child Pornography Arrest Raises... by greenyoda on Sunday November 24, 2013 @02:35PM (#6790754)
If they only did it to remove redundant pictures, they would have no way of knowing that a given image was porn; all they'd know was that it was identical to some other image on their servers.
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