Ten zip entries, none labeled nyaa or neko - all virii ?

tokyotosho uploaded a lot of viruses inside the zip, can you exclude the zip extension? https://animetosho.org/search?q=.zip

Right, and if I'm not mistaken, the admin said that when the time comes, they'll also try to see about posting the backend code so that whoever is interested in creating a successor site like this can use as the backend, especially in regards to connecting to said torrents that are posted and processing them for the DDL route which I'm guessing many of us who don't do torrent will still be able to do after this site's operation shuts down.

Good to know, appreciate that!

So it looks like the account only had three torrents total submitted to Nyaa.si:
https://cache.animetosho.org/nyaasi/view/2077928
https://cache.animetosho.org/nyaasi/view/2077930
https://cache.animetosho.org/nyaasi/view/2077931

So the user never actually posted any legit torrent.
Torrents currently on the user's listing are before May 2017, so would've been imported from NyaaTorrents.

I did find five comments posted (again, Nyaa.si data only):

https://nyaa.si/view/960457#com-3
https://nyaa.si/view/971771#com-62
https://nyaa.si/view/1023531#com-16
https://nyaa.si/view/1023531#com-22
https://nyaa.si/view/1070399#com-14

So it doesn't look like the account was ever used much at Nyaa.si. I imagine the 'trusted' status and the fact old torrents got assigned to the account was coordinated via discussions elsewhere.
I'm guessing the user didn't care much for their account, so maybe it got compromised via password reuse or similar.

But it certainly does give a lot of credit to the hacked account theory.