GPS/GNSS technology has revolutionized maritime navigation, providing accurate and reliable positioning information. However, the reliance on GNSS for ship navigation presents significant risks, particularly due to the potential for signal jamming and spoofing. These vulnerabilities can lead to serious navigational errors, with potentially damaging consequences.

The latest years, the threats posed by signal jamming and spoofing has dramatically increased in numbers and severity due to geopolitical tensions. GNSS signal disruption and manipulation is today playing a vital role as a warfare strategy in several conflicts around the world. Equipment to perform jamming and spoofing attacks is easily available. It is today equally easy for someone to carry out such attacks outside the known conflict areas.