Just let it be known that if a ship can’t be identified, we’ll sink it. “Do ya feel lucky punk?”
It’s funny the responses here that don’t seem to be aware that the majority of spoofing has been by ships trying to avoid Iranian drone attacks. Now the Iranian-side ships are starting to do the same to find a way around the US blockade. Start blowing up “dark” ships indiscriminately and it will be mostly your “own” ships you are sinking.