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 wrote in a paper. (pdf)

via Researchers find crippling flaws in global GPS – Networks – SC Magazine Australia – Secure Business Intelligence.

The GPS data level attacks caused more damage than previous spoofing attacks and were able to trigger a remote crash of high-end professional receivers.