GPS spoofing, which sends fake satellite-like signals, and GPS jamming, which drowns receivers in noise, are increasingly serious problems. Researchers at Oak Ridge National Laboratory in Tennessee have created what they say is the most effective system yet for detecting GPS interference, which could help blunt such attacks. ORNL said Wednesday that a group of boffins led by researcher Austin Albright has developed a new portable device that can detect both spoofing, which sends fake signals that mimic GPS satellite signals to provide bad location data, and jamming, which simply floods GPS receivers with noise.…