"This was a long-term operation to steal intelligence and information that went under the radar, " he said.

BBC: How the New York Times cleaned house after its hack attack

Boston University's Intelligent Mechatronics Lab launched operation Batcopter to better understand how bats can fly in clusters large enough to be detected by radar without colliding.

ENGADGET: Batcopter UAV observes anti-collision bat behavior, crashes into ground (video)