367,000-Ship Study Finds Global GPS Spoofing, Red Sea Activity Before Grounding
A study of 367,000 ships finds global GPS spoofing, including Red Sea activity detected months before the MSC Antonia grounding in May 2025.
Researchers analyzing global ship-tracking data have identified 31 persistent areas of abnormal GPS activity, with at least 22 showing strong evidence of large-area spoofing that can make vessels report false positions and physically impossible movements.
The study, published September 29 by researchers at the Georgia Institute of Technology, examined Automatic Identification System (AIS) data from more than 367,000 vessels. The authors describe it as the first global measurement study of large-area maritime GPS spoofing based on real-world vessel traffic, and the paper is due to appear at the 2027 IEEE Symposium on Security and Privacy.
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Researchers Tracked Impossible Ship Movements
Ships use AIS to broadcast information including their identity, position, speed and course, with location information derived from satellite navigation. Civilian GPS signals are generally unauthenticated...
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