The Federal Bureau of Investigation and the Coast Guard boarded oil tankers. These vessels were reportedly heading towards the United States coast when federal agencies took this action. The boarding occurred following the discovery of a compromise within the tankers' networks. This incident prompted direct intervention by US authorities.
The feds are said to be investigating this compromise of the tankers' networks. This investigation is ongoing, and it addresses the identified breaches. In one specific instance, the network interference directly affected one of the tanker's navigation and propulsion systems. This involved a disruption to key operational controls of the vessel.