Chinese vessels have intensified AIS spoofing threat in Taiwan’s waters, signaling a new type of cognitive maritime warfare. The incidents aim to test Taiwan’s responses to perceived incursions and create confusion in maritime monitoring.
The Institute for the Study of War reported multiple cases of fishing boats transmitting fake automatic identification system signals last month. One vessel impersonated a Russian warship, while another mimicked a Chinese law enforcement ship. Analysts say these actions show a coordinated effort.
Starboard Maritime Intelligence data revealed that Min Shi Yu 06718 alternated between its own AIS and the AIS of Hai Xun 15012. Hai Xun ships are usually operated by China’s civilian Maritime Safety Administration. This indicates a fishing vessel pretended to be a law enforcement craft.
On September 17, Min Shi Yu 07792 transmitted a fake signal of Russian Warship 532 in Taiwan’s northern exclusive economic zone. Several other Min Shi Yu vessels also sent misleading signals, pretending to be tugboats or other fishing boats. Experts suggest these boats belong to China’s maritime militia.
Chinese Coast Guard vessels entered restricted waters around Kinmen County four times between September 15 and 17. Although three to four incursions per month are normal, the concentrated timing marks a new pattern.
Airspace incursions also increased. Chinese sorties into Taiwan’s air defense identification zone exceeded 300 per month for eight consecutive months. This more than doubles the pre-May average. Analysts say it aims to reduce Taiwan’s threat awareness and probe response procedures.
The report warns these operations strain Taiwan’s defense resources and complicate the detection of real threats. Continuous monitoring demands significant personnel and operational capacity.
Officials suggest Taiwan enhance real-time monitoring, improve response protocols, and coordinate with international partners. Strategies may focus on countering cognitive warfare, AIS spoofing, and gray-zone maritime operations.
In conclusion, the AIS spoofing threat represents an evolving security challenge. Analysts urge Taiwan to adapt to both physical and informational intrusions.

