<a href="http://www.securityfocus.com/">Security Focus</a> ran a longish article called <a href="http://www.theregister.co.uk/content/55/23218.html">Lamo's Adventures in WorldCom</a> about a lone 20 year old hacker who finds holes in corporate web sites not by hacking, but just by looking for them. He has no home and often spends all night in a Kinko's with his old laptop jacked into a free connection. He doesn't take advantage of the information he finds and, once he's finished, usually turns it over to the company he ransacked, along with a map of all of the holes in their Net.