OK, this is old news, but relevant
Suggestions that military systems can't be hacked are just gung-ho balderdash
Computer Virus Tracking US Drones
" October 08, 2011Military.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.....
"he security specialists aren’t sure whether the virus and its so-called “keylogger” payload were introduced intentionally or by accident, according to Wired. The magazine’s source said it could be a common piece of malware that just happened to make its way into UAVs’ networks.
They also don’t know how far it has spread, but they believe it has reached both into classified systems at the base, meaning that some secret data may have been captured by the keylogger and relayed to someone outside the authorized chain of command, the magazine was told."