https://gcaptain.com/u-s-warns-of-gps-spoofing-in-persian-gulf/

By Tony Capaccio (Bloomberg) –The U.S. military is warning that Iranian naval forces may increase “aggressive actions” against American and allied commercial ships, citing reports from crews that experienced navigation and communications jamming.
“Vessels have reported GPS interference, bridge-to-bridge communications spoofing, and/or other communications jamming with little to no warning,” U.S. Central Command said in a statement Wednesday night that suggested Iranian forces may be attempting to steer ships into its waters to provoke a confrontation. The warning was delivered in a statement that also cited an advisory from the Transportation Department’s Maritime Administration. It set out procedures consistent with a new joint effort by the U.S. and U.K. to protect shipping in the Persian Gulf and the Strait of Hormuz, a chokepoint for oil shipping in the region.