Opsec oopsie: Dutch navy frigate location outed by mailing it a Bluetooth tracker

Or, how public information and a 5 tracker exposed an avoidable opsec lapse

Militaries around the world spend countless hours training, developing policies, and implementing best operational security practices, so imagine the size of the egg on the face of the Dutch navy when journalists managed to track one of its warships for less than the cost of some hagelslag and a coffee....