May 2021: Reports of maritime GNSS spoofing have become all but routine in recent years. Ships navigating the Strait of Hormuz have been reporting suspicious navigation problems which may be the result of Iranian spoofing. Many theorize that Iran uses spoofing to lead unsuspecting vessels into Iranian waters where they may be captured. This article from The Economist mentions Dr. Humphreys's experiments in GPS spoofing as the first public demonstrations of such technology.