this post was submitted on 28 Aug 2023
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I noticed a bit of panic around here lately and as I have had to continuously fight against pedos for the past year, I have developed tools to help me detect and prevent this content.

As luck would have it, we recently published one of our anti-csam checker tool as a python library that anyone can use. So I thought I could use this to help lemmy admins feel a bit more safe.

The tool can either go through all your images via your object storage and delete all CSAM, or it canrun continuously and scan and delete all new images as well. Suggested option is to run it using --all once, and then run it as a daemon and leave it running.

Better options would be to be able to retrieve exact images uploaded via lemmy/pict-rs api but we're not there quite yet.

Let me know if you have any issue or improvements.

EDIT: Just to clarify, you should run this on your desktop PC with a GPU, not on your lemmy server!

(page 2) 46 comments
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[–] realcaseyrollins@kbin.projectsegfau.lt 3 points 1 year ago (1 children)

Can this be used with Mastodon as well?

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[–] BeAware@lemm.ee 3 points 1 year ago (1 children)

Now if you can make this work with mastodon, i'd be eternally grateful.😁

[–] db0@lemmy.dbzer0.com 4 points 1 year ago

It's software agnostic. So long as you're storing you're images in object storage, it should work

[–] donut4ever@lemm.ee 3 points 1 year ago

This is awesome. Thank you for making it.

[–] nick@campfyre.nickwebster.dev 2 points 1 year ago (1 children)

I think deleting images from the pictrs storage can corrupt the pictrs sled db so I would not advise it, you should go via the purge endpoint on the pictrs API.

[–] db0@lemmy.dbzer0.com 1 points 1 year ago (1 children)

Nah. It will just not find those images to serve

[–] nick@campfyre.nickwebster.dev 1 points 1 year ago (1 children)

Interesting, when I tried a while back it broke all images (not visible on the website due to service worker caching but visible if you put any pictrs url into postman or something)

[–] db0@lemmy.dbzer0.com 1 points 1 year ago (1 children)

Well you can clearly see images still here ;)

[–] nick@campfyre.nickwebster.dev 1 points 1 year ago* (last edited 1 year ago) (1 children)

True, you're correct. I'm just not sure how you did it without corrupting the sled db. Maybe I'm just unlucky

[–] db0@lemmy.dbzer0.com 1 points 1 year ago

the sled db is not touched. It's just that when pict-rs is trying to download the file pointed by the sleddb, it's get a 404

[–] ensignrick@startrek.website 2 points 1 year ago

Amazing work.

[–] lemmy@lemmy.stonansh.org 1 points 1 year ago (1 children)

Can this be used with the Lemmy-easy-deploy method?

[–] db0@lemmy.dbzer0.com 2 points 1 year ago (1 children)

This shouldn't run on your lemmy server (unless your lemmy server has a gpu)

[–] lemmy@lemmy.stonansh.org 0 points 1 year ago (1 children)
[–] db0@lemmy.dbzer0.com 1 points 1 year ago

I don't know your setup, but unless it's a very cheap GPU, it would be a bit of a waste to use it only for this purpose. But up to you

[–] db0@lemmy.dbzer0.com 0 points 1 year ago (1 children)

Omg! If someones starts posting photorealistic generated csam to your instance, is this what you're going to tells to your userbase when you refuse to delete it? Are you for real? In that case, good fucking luck!

[–] snowe@programming.dev 0 points 1 year ago (1 children)

removing inappropriate sexual content is completely different than CSAM... a point you seem to be trying INCREDIBLY hard to not understand. Dude, just quit. Please please stop with this nonsense. You are unable to let it go. Every one of us builds bad software at some point. For you this is it. Just let it go, go build something else.

Sheesh.

[–] db0@lemmy.dbzer0.com 1 points 1 year ago* (last edited 1 year ago) (1 children)

Lol, I really pity your users if that's what you're like talking to other admins.

Look, maybe I can make it very plain for you to finally get. You will not be able to recognise it's not ai generated and your "proper solution" won't catch it. Your users will freak the fuck out.

Use your brain. I'm out

[–] snowe@programming.dev 1 points 1 year ago

it's clear from your comments here and in matrix that you think you're always right and you clearly can't take criticism. Good luck in the future dude. You're going to need it.

[–] zoe@aussie.zone -2 points 1 year ago

anything worthy is illegal in the us, get gud! thankfully Lemmy is hosted in europe or any vps somewhere

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