GPS is under siege from hostile forces. In 2024, there were as many as 700 daily GPS jamming and spoofing incidents, according to an analysis of ADS-B reports by Switzerland’s Zurich University of Applied Sciences (ZHAW). The Swiss institution recorded 41,000 GPS spoofing events from Aug. 15 to Sept. 15 last year.One of the deadliest GPS L1 civil signal interference events occurred on Dec. 25. On that date, Azerbaijan Airlines Flight 8243, an Embraer 190, was lured off course while enroute from ...