Accounts with third-party service providers were used “for exfiltration or infrastructure,” according to a post by law enforcement on LockBit’s seized darkweb domain.
By pwning it. You dont have to find it to pwn it. You just have to be able to send data to it, which everyone can do because whats the point of having a server if noone can interact with it. The attacker just interacts with it in a way that manipulates it to execution attacker controlled code. So for a .onion website for example you find a vulnerability in the websites code and exploit it to make the server the website is running on do what you want.
Nah nothing like that. I mean that they're sharing info to friends willy nilly and some cops got wind of it. That's kinda what happens to some of the dark web guys who get caught. It's very rarely something very technical it's just their own idiocy for reusing emails, transferring funds incorrectly making it traceable, Delivering sus packages all at once to usps