As well as other countries, South Korea heavily relies on GPS navigation for various sectors including aviation, maritime, and road transport. The country has previously faced similar electronic disruptions in the years 2010 and 2011.
According to sources, from late April to early May, large coordinated cyber disturbances, which are believed to originate from North Korea, emitted electronic jamming signals affecting GPS navigations. These disruptions influenced passenger aircraft, ships, and car navigation systems. Signals were pinpointed coming from the direction of Kaesong, a location approximately 10 kilometers from the inter-Korean border and about 50 kilometers from key areas such as Seoul. Historical data suggests that past jamming incidents coincided with U.S.-South Korea joint military exercises and lasted for a duration of up to 10 days.
While no immediate accidents, casualties, or fatalities were reported despite jammed navigation signals affecting 337 commercial flights and 122 ships, amongst which a ferry with 287 souls on board and an oil tanker.