this post was submitted on 28 Aug 2023
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cross-posted from: https://jamie.moe/post/113630

There have been users spamming CSAM content in !lemmyshitpost@lemmy.world causing it to federate to other instances. If your instance is subscribed to this community, you should take action to rectify it immediately. I recommend performing a hard delete via command line on the server.

I deleted every image from the past 24 hours personally, using the following command: sudo find /srv/lemmy/example.com/volumes/pictrs/files -type f -ctime -1 -exec shred {} \;

Note: Your local jurisdiction may impose a duty to report or other obligations. Check with these, but always prioritize ensuring that the content does not continue to be served.

Update

Apparently the Lemmy Shitpost community is shut down as of now.

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[–] ludrol@bookwormstory.social 17 points 1 year ago (2 children)

I checked and there shouldn't be any images stored on the server when running lemmy 1.18.4. The post was made in high emotional distress and shouldn't be taken at a face value. If the posts are bothering you I advise purging the posts in question. (I have already done that)

[–] Jamie@jamie.moe 17 points 1 year ago* (last edited 1 year ago)

I'm on 1.18.4, once I deleted the most recent images, the former CSAM posts(among others) became broken images. So yes, it was pulling from local disk cache. Then I took care of the posts themselves after the content was invalidated.

[–] hitagi@ani.social 9 points 1 year ago (7 children)

How did you check this? From my understanding, images from external servers are copied (and transcoded) over locally. At least in my server (running 0.18.4), they do.

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[–] krebstar@lemmy.world 14 points 1 year ago (2 children)
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[–] wintermute_oregon@lemm.ee 13 points 1 year ago (2 children)

If the source deletes the post. Won’t that remove it from all the instances ?

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[–] CrimeDad@lemmy.crimedad.work 11 points 1 year ago (1 children)

I'm not subscribed to that community, but I guess I'm glad Pictrs doesn't work for me, since I am using the Yunohost version of Lemmy. The creators of the Yunohost package couldn't get it to work. I haven't really missed it honestly.

[–] dandroid@sh.itjust.works 8 points 1 year ago (1 children)

Can you run lemmy without pictrs? What behavior is different?

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[–] Rearsays@lemmy.ml 9 points 1 year ago* (last edited 1 year ago)

Likely Spez’s personal jailbait collection

[–] kev@lemmy.kevhomeit.trade 8 points 1 year ago (1 children)

I am using the Lemmy easy deploy would this command works?

[–] russjr08@outpost.zeuslink.net 8 points 1 year ago

You'll need to find where the actual container files are being stored. I'm unfortunately not familiar with Lemmy Easy Deploy, but you should have a folder that has some files/folders like docker-compose.yml, volumes, lemmy.hjson.

The important one is the volumes/pictrs/files folder, take the full path of that folder and replace it with the /srv/lemmy/example.com... path from the original post, and then that command should work.

[–] TropicalDingdong@lemmy.world 7 points 1 year ago

There was a weird JSON error I was getting in the last few minutes. I'm not sure if this is at all related.

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