Iranian engineer: We hacked U.S. drone

The unmanned aerial U.S. attack drone that was downed in Iran was felled by exploiting a navigational weakness, an Iranian engineer studying the craft has revealed to the Christian Science Monitor.

The engineer, not named in the report, tells the Monitor that the Iranians knew to exploit a weakness in the craft's GPS navigation system to force it to land.

The report also notes that news of Iran's ability to down the drone comes as the U.S. and some other nations appear to be engaged in a covert-war with the the country.