Fraudsters beware: Iowa State engineer is developing cyber technology to find you / EurekAlert!, 7 January 2008
http://www.eurekalert.org/pub_releases/2008-01/isu-fbi010708.php
"Yong Guan had scribbled 12 arrows across his office whiteboard, each black line going from one little box he had drawn to another little box. He had written five long formulas up there, too.
And that was bad news for cyber criminals."