Facebook now acknowledges what we said for a long time and they didn't acknowledge, that every single photograph uploaded to Facebook is put through facial recognition software they call PhotoDNA which is used to find people for whom any law enforcement agency in the world is looking.

You understand?

So every time you upload a photograph to Facebook or put one on Twitter for that matter you are now ratting out anybody in that frame to any police agency in the world that’s looking for them.

Taken from: http://www.itworld.com/it-managementstrategy/246549/facebook-sharing-your-photos-police