There's a very interesting series of articles from Wired Magazine about cybercrime. It gives a very detailed look at what sort of stuff has been going on and just how much some cybercriminals get away with. It's a somewhat scary story since what is described actually happened.
Here are links to the three articles:
I was a Cybercrook for the FBI
Tightening the Net on CyberCrime
Crime Boards Come Crashing Down