I’ve just come across this article on Hackaday, which explains how you can send out an interference signal for many of the popular makes of drone that you can buy these days.
Using a RaspberryPi the demo shows that, with a simple radio transmitter attached to it, you can easily shutdown a drone that you don’t want snooping on your property or on your secret filming location.
Shame this wasn’t around while J.J.Abrams was filming at Greenham Common.
Source: Hijacking Quadcopters with a MAVLink Exploit | Hackaday