Unfortunately I know of a handful of people too stubborn and stupid enough to not tighten stuff like this down. "Who knows that this is an IPMI?" is an actual excuse it seems.
While i understand that saying ISP's in the US suck ass is an understatement, I'm not sure why you'd want to RENT a service from a company that completely rapes your online presence in terms of integrity.
Advice he could use it is indeed. Read up on stuff and possibly get in on new coins early on, even if it ends up being more or less worthless you could make yourself a few bucks just by being an early adapter.
Not to be "that guy" - but judging by the sound of the post you seem to have a server from which you sell stuff, yet you do not know how to prevent users from spawning bad processes. Is this correct?
If that is the case, all i can say is ouch!
As for resolving the issue at hand, you could use...