Bluetooth has been around for a long time. It was subject to hacking and security analysis right from the start. At DeepSec 2013 Verónica Valeros and Sebastián García gave an overview about the current state of affairs. They showed that Bluetooth is alive and kicking, exploit-wise.
„Bluetooth devices are ubiquitous. However, until recently, there were no tools to perform Bluetooth wardriving. Considering that each cell phone usually identifies one person and that the position of these devices can be stored, it is possible to extract and visualize people's behavior. Most people is not aware that their Bluetooth device allows to easily abuse their privacy. A new tool called Bluedriving is presented to capture and store the position and information of bluetooth devices. The devices can be visualized on a map and different alerts can be used to follow people in the street. We present the tool along with a large capture dataset and a deep privacy analysis. We conclude that it is possible to follow people using their Bluetooth device.“