SkyJack uses a Parrot AR.Drone quadcopter with a Raspberry Pi, running some custom software, attached to it. From their, it can easily hack other Parrot drones nearby, hijacking their wireless connections and taking over their flight pattern. In a blog post, hacker Samy Kamkar muses on what it could be used for: “How fun would it be to take over drones, carrying Amazon packages or take over any other drones, and make them my little zombie drones Awesome””]
Source: https://gizmodo.com/skyjack-lets-you-hunt-down-and-hack-other-drones-from-t-1476286537