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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 looorg on Friday November 10 2017, @06:49PM
Since they don't really, from what I have seen so far, go into any great depth about how this revenge-p0rn protection scheme will work it's quite hard to know. Will they even store metadata? Will there just be one hash per image or will they run a few different once? Considering the amount of people on earth that apparently also like to take pictures of themselves showing tits, dicks and all things between there should be a fairly large amount of these created on a daily basis. It shouldn't take to much time until you run into one of them hashing paradoxes and there is a collision and you have two or more images that generate the same hash (two files one hash ...). That might not matter all that much tho in this case since they would just be blocking a few more p0rn images then they intended. There might be an issue if they want to notify the original uploader that they have been shared and the system automatically messages two different people to tell them about it.