Research results have been published recently showing that AIS information provided on internet sites can be spoofed – that is false information can be presented, including the names and other details of vessels, their position and status.

These vulnerabilities have, in fact, been well-known since the early days of AIS and maritime administrations do not rely on these internet sites for the services they provide. However, this publicity may result in organisations in the international navigation community facing questions. The following briefing note may assist in answering those questions.