For background, this post on db zero provides background on what is going on.

Lemmy.world had to shutdown a community and temporary restrict signups, other instances have purged image caches, and dbzer0 is using a scanner to prevent images from being uploaded if the get flagged.

  • nickwitha_k (he/him)@lemmy.sdf.org
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    1 year ago

    I haven’t looked into the code yet but, I was given the understanding that Lemmy also implements a local pull-through cache for images in order to try to improve performance. So, if a user on our instance came upon CSAM or other illegal images while browsing through SDF, a local copy may be cached.

    • u/lukmly013 💾 (lemmy.sdf.org)@lemmy.sdf.org
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      1 year ago

      Oh, crap! You’re right. I just stumbled upon a post with image on i.redd.it. At first it didn’t load, as expected since I blocked *.redd.it domain, but then after a while it did. I checked the image URL, and indeed it’s coming through lemmy.sdf.org. And this time it’s the full resolution image. Maybe it wouldn’t be a bad idea to disable that if it’s possible.