Gaping holes discovered in global GPS

Researchers have developed three attacks capable of crippling Global Positioning System (GPS) infrastructure critical to the navigation of a host of military and civilian technologies including planes, ships and unmanned drones.
The scenarios developed include novel remote attacks via malicious GPS broadcasts against consumer and professional-grade receivers, which could be launched using $2,500 worth of equipment.
A 45-second crafted GPS message could bring down up to 30 percent of the global GPS Continuously Operating Reference Stations (CORS), while other attacks could take down 20 percent of NTRIP networks, security boffins from Carnegie Mellon University and firm Coherent Navigation have said in a new paper (PDF).