Bluetooth key flaw lets attackers unlock 2.2 million cars

Researchers at the University of California San Diego have identified a vulnerability in at least 2.2 million vehicles equipped with dealer-installed KARR and SWDS security systems. These systems, manufactured by Acrisure, contain a major flaw as they all utilize the same secure key, allowing anyone with knowledge of the key and a Bluetooth device within five yards of the vehicle to unlock it, honk the horn, flash headlights, or even prevent it from starting. The full details of the research will be published on August 12.