Professor Todd Humphreys testified [PDF] about how he and his team "repeatedly took control" of a civilian drone from a remote hilltop at White Sands Missile Range in New Mexico in front of Homeland Security and FAA officials. He had previously expressed concerns that spoofing GPS on a drone "is just another way of hijacking a plane" and crashing the hacked drone into another plane or into a building. At the hearing, Humphreys said, "Constructing from scratch a sophisticated GPS spoofer like the one developed by the University of Texas is not easy. It is not within the capability of the average person on the street, or even the average Anonymous hacker. But the emerging tools of software-defined radio and the availability of GPS signal simulators are putting spoofers within reach of ordinary malefactors.""
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