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Facebook To Use Photo-Matching To Block Repeat 'Revenge Porn' (aol.com) 70

An anonymous reader quotes a report from AOL: Facebook is adding tools to make it easier for users to report so-called "revenge porn" and to automatically prevent the images from being shared again once they have been banned, the company said. "Revenge porn" refers to the sharing of sexually explicit images on the internet, without the consent of the people depicted in the pictures, in order to extort or humiliate them. The practice disproportionately affects women, who are sometimes targeted by former partners. Beginning on Wednesday, users of the world's largest social network should see an option to report a picture as inappropriate specifically because it is a "nude photo of me," Facebook said in a statement. The company also said it was launching an automated process to prevent the repeat sharing of banned images. Photo-matching software will keep the pictures off the core Facebook network as well as off its Instagram and Messenger services, it said.
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Facebook To Use Photo-Matching To Block Repeat 'Revenge Porn'

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  • Required pessimism (Score:2, Insightful)

    by Anonymous Coward

    There is porn of me out there. I'm not ashamed of it but I'd rather not have it spread around gratuitously. However: HELL NO I will not voluntarily tag it with my name, acknowledging that it really is me, so FB can store it in a database. Even if FB doesn't abuse it it's just begging to get leaked.

  • This is an excellent ploy to freely tag compromising images that would otherwise be unidentifiable (i.e. from the neck down). What will Facebook do with their person-matched database of embarrassing pictures? Sell to the highest bidder? Keep in mind, once those pictures are uploaded and flagged by a person, they are going to sit in Facebook's servers until the end of time... to combat revenge porn of course.

  • Don't take the pictures, and stop sending them to every man. FTFY
  • Will it work if you make alterations to the photo (change resolution, apply filters, change compression, add elements to the photo, etc).
    • I'm guessing they will be using some form of perceptual hashing, along the lines of phash. I've used it myself for identifying images in a large collection, so I am able to answer your questions:

      Resolution: No. The first thing most perceptual hashes do is convert all images to a fixed size for comparison anyway.
      Filters: Depends upon the filter.
      Compression: No. You'd have to compress it until it looked like a Tetris game before the hash was fooled.
      Add elements: Depends how much is covered.
      But, the one you mi

  • The Facebook who claimed they couldn't take down copies of a single selfie of a Syrian refugee with German Chancellor Merkel from Fake News posts which falsely claim he's a terrorist? Because there was no technical way to do that?

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