Earlier this month, the U.S. government-sponsored Carnegie Mellon Computer Emergency Response Team was compelled to put out a warning on the DBPOWER Quadcopter, which was vulnerable to a rudimentary attack that allowed anyone within range of the drone’s Wi-Fi connection to take it out of the sky. The researchers who uncovered the bug, from the Cyber-Physical Systems Security Lab at University of Texas at Dallas, put together a video for Forbes showing how they quickly obtained root access to the quadcopter and cut its power.