Over the past month I've gotten multiple unprovoked, unsolicited anti-American hate spam from user CyberGhost - or rather, apparently a hacker who has taken over his account. I don't have administrative user privileges around here, so if somebody can help out, that would be great. I bet an IP ban would take care of him.

For a look at what he's been saying, here's a transcript.
https://www.dropbox.com/s/1usy7ecrxui0fbl/cyberghost.html?dl=0