A completely different method is rubber-hose cryptanalysis or its close relative the purchase key attack. As the names imply the keys are in these cases found through threat, blackmail or bribery. Remember that keys are in our case not memorised passwords but SIM-cards and long sequences of numbers written to some kind of digital media. Another variation on this theme is to break in and steal the key or the desired information directly. It is also possible that a wrongdoer changes the equipment in the vehicle to gain information or simply with the intent to "frame" the vehicle owner.