Computer Virus Tracking US Drones
October 08, 2011
Military.com|by Bryant Jordan


Who’s watching the watchers?


That’s the question the defense officials are asking with the discovery that a computer virus has infected the U.S.-based control stations of Predator and Reaper drones, tracking every keystroke made by the pilots as they guide the vehicles on their missions.


The drones, which conduct reconnaissance and combat missions, continue to fly, according to an official interviewed by Reuters, who spoke on condition of anonymity.

Follow the above link for the rest of the story. I suspect that the OS used is windows NT or a variant.