We unfortunately have to close the !lemmyshitpost community for the time being. We have been fighting the CSAM (Child Sexual Assault Material) posts all day but there is nothing we can do because they will just post from another instance since we changed our registration policy.

We keep working on a solution, we have a few things in the works but that won't help us now.

Thank you for your understanding and apologies to our users, moderators and admins of other instances who had to deal with this.

Edit: @Striker@lemmy.world the moderator of the affected community made a post apologizing for what happened. But this could not be stopped even with 10 moderators. And if it wasn't his community it would have been another one. And it is clear this could happen on any instance.

But we will not give up. We are lucky to have a very dedicated team and we can hopefully make an announcement about what's next very soon.

Edit 2: removed that bit about the moderator tools. That came out a bit harsher than how we meant it. It's been a long day and having to deal with this kind of stuff got some of us a bit salty to say the least. Remember we also had to deal with people posting scat not too long ago so this isn't the first time we felt helpless. Anyway, I hope we can announce something more positive soon.

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[–] Nollij@sopuli.xyz 17 points 1 year ago (1 children)

If they hash the file binary data, like CRC32 or SHA, yes. But there are other hash types out there, which are more like "fingerprints" of an image. Think of how Shazam or Sound Hound can recognize a song playing, despite the extra wind, static, etc that's present. There are similar algorithms for images/videos.

No idea how difficult those are to implement, though.

[–] Railcar8095@lemm.ee 7 points 1 year ago

There are FOSS applications that can do that (czkawka for example). What I'm not sure it's if the specific algorithm used is available and, more importantly, if the csam hashes are available for general audiences. I would assume if they are any attacker could check first and get the right amount of changes.