This video demonstrates why you should change your default bluetooth headset pin. This user, “brandon90″ from Wyoming demonstrates how he can eavesdrop a conversation even if the bluetooth is not connected to a phone call. You can still listen in on the microphone, and even inject arbitrary audio to the headset.

He uses a linux laptop, with a Bluetooth dongle, a high gain DB antenna and his Nokia phone to do this. Watch the video below for the demonstration. The tool he is running is called “car whisperer” which can be installed on any linux laptop.

enjoy…