This article on taking control of drones by spoofing GPS signals is a good example.
Here's the relevant section in the book:
“The early drones worked exactly that way, Major. They were vulnerable; if communication is disrupted the drone is pilot-less. Worse still, if the signal is intercepted it is possible for a hostile force to take control of the drone. Back as far as 2012 the Iranians captured what was then one of our most advanced drones by spoofing a GPS signal. They convinced the drone that it was landing back at its base in Turkey when it was really landing in Teheran. Incidents like that were the impetus for the EM program."