Very amusing. Basically this guy gets ahold of the software that these jerks use and finds exploitable holes, making life miserable for the bad guys! What he is doing is definitely illegal, but who is going to report him?
http://blog.wired.com/27bstroke6/2008/04/researcher-demo.html
http://blog.wired.com/27bstroke6/2008/04/researcher-demo.html