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Facebook to Fight Revenge Porn by Letting Potential Victims Upload Nudes in Advance
Submitted via IRC for TheMightyBuzzard
This new protection system works similar to the anti-child-porn detection systems in use at Facebook, and other social media giants like Google, Twitter, Instagram, and others.
It works on a database of file hashes, a cryptographic signature computed for each file.
Facebook says that once an abuser tries to upload an image marked as "revenge porn" in its database, its system will block the upload process. This will work for images shared on the main Facebook service, but also for images shared privately via Messenger, Facebook's IM app. Potential victims will need to upload nude photos of themselves
The weird thing is that in order to build a database of "revenge porn" file hashes, Facebook will rely on potential victims uploading a copy of the nude photo in advance.
This process involves the victim sending a copy of the nude photo to his own account, via Facebook Messenger. This implies uploading a copy of the nude photo on Facebook Messenger, the very same act the victim is trying to prevent.
The victim can then report the photo to Facebook, which will create a hash of the image that the social network will use to block further uploads of the same photo.
This is possible because in April this year, Facebook modified its image reporting process to take into account images showing "revenge porn" acts.
Facebook says it's not storing a copy of the photo, but only computing the file's hash and adding it to its database of revenge porn imagery.
Victims who fear that former or current partners may upload a nude photo online can pro-actively take this step to block the image from ever being uploaded on Facebook and shared among friends.
We won't be doing this. I don't even want to see hashes of you folks naked.
Facebook asks Australians to send nude photos, for safety
"Worried that an ex-boyfriend or girlfriend might post your intimate photos on the internet? Facebook says it has a solution – as long as you'll hand over the photos first.
The social media giant recently announced its new plan to combat "revenge porn," when individuals post nude photos online without the consent of the subject." http://www.foxnews.com/tech/2017/11/08/facebook-says-it-needs-your-explicit-photos-to-combat-revenge-porn.html
(Score: 2) by JNCF on Saturday November 11 2017, @05:00PM
On second thought, maybe facebook could be looking for features of an image (relations between curves, etc.) that I don't fully understand, hashing that mess as individual pieces, and comparing those hashes to the hashes of the the features gleaned from the potential revenge porn. I doubt TinEye reexamines its whole database everytime it searches for an image. You might be onto something.