I don't know what these guys are using, but I searched and found an article I remembered from DIY Drones last year. http://madhacker.org/how-to-hijack-a-drone-

I don't know what these guys are using, but I searched and found an article I remembered from DIY Drones last year. http://madhacker.org/how-to-hijack-a-drone-by-telemetry-and-prevent-it/ http://madhacker.org/how-to-hijack-a-drone-by-telemetry-and-...