Figured out the cause, it's an exploit, but luckily only can be used for deleting media from posts and not full posts.
Had to commandeer a bunch of boards to disable the setting, transferred back them to the respective BOs immediately. Sorry about that.

Thanks for all the users who helped out, reporting the issue and giving tips.

>>18425
Can you restore the images?

>>18426
I don't know. Probably not.

It seems the bug is fixed, so no more deleting media from others' posts.
Still not sure about restoring things.

>>18425
Any info on which boards were targeted?

>>18424
>>18429
/co/ lost all it/s nandroid thread images almost surgically from the rest of the board if that's relevant, even a nandroid post mid way through timeline in another accidental thread didn't get touched

>>18430
Yes, it is relevant, as only a few handpicked boards were targeted, most of which weren't even on the top boards list. One of these boards probably made this pathetic skiddie extremely mad by posting things he didn't like, so he threw a cute little temper tantrum.

>>18429
>>18432
Quite a few boards were targeted, from the top of my head, I could name seven, plus co apparently >>18430 >>18431 , I think he tried deleting on others but user deletions were disabled there already.
On some boards he left those cryptic posts, on others he did not.

>>18433
>from the top of my head, I could name seven
Please do.

He made a bunch of those posts on /agatha2/ as well, I mistook them for normal spamming at the time. So this exploit only worked if user post deletion was enabled? I had it disabled and I haven't noticed any images missing, but I can't be sure.

>>18434
... bbg, rapport, librejp, turul, argentina, kc, b, godscommunity, operate ...
All right that's nine, the rest I have to check.

>>18436
Yes, just with user post deletion enabled. There was a bug that allowed deleting images of any post.
Most notably polru isn't missing anything, because user deletions are disabled. I did not have to check it, I know it for a fact. Others I had to make sure.
Anyway, the bug is fixed now.

Isn't there an option for edit the links back into the posts?

>>18438
It would probably be a huge chore restoring so many images in so many threads.
That does raise the question though, were the images deleted off the site or just from the post? and If the images were not deleted off the site would it be possible to get links to those images for their respective boards?

>>18438
>>18439
No. We don't know what image belongs to what post. That data is exactly what was deleted.
No. Auto-prune deletes old images.

Was the exploit in Magrathea or the 6~ year old fork of Lynxchan End runs?

>>18446
The Lynx fork.

>>>/turul/6067

He's back at it agin

>>18550
Thanks.
The exploit was fixed. He failed this time.

Looks like this guy is back, posting on /agatha2/.
>>>/agatha2/31346
>>>/agatha2/31350
>>>/agatha2/31352
>>>/agatha2/31353

May be the same guy who was asking to enable code tags?
>>>/agatha2/31164

I'm not sure what he's trying to do. I understand exploit is fixed and also user post deletion is disabled there so hopefully he can't do any damage.

>>18746
He's making a bunch of posts like that on other boards, too.