7. ASTRA (real name withheld to media)

Years active: 2002-2008

Hack job: A 58-year-old Greek mathematician hacked into the computer systems of France's Dassault Group over a period of five years, stealing weapons technology data and 3D modeling software that he then sold to at least 250 people in Brazil, France, Germany, Italy, South Africa, and the Middle East. Dassault was understandably pissed, and went on a global manhunt that tracked ASTRA to an Athens apartment.

Total payout: Unclear, but the damages he caused are estimated to be between $250-$361 million.

Punishment: ASTRA was caught in January 2008 and is serving six years in jail.