HACKERS TARGET OLD PROBLEMS
IN a presentation illustrating that some modern hacks rely on weaknesses that should have already been solved, hacker Samy Kamkar demonstrated an attack at Def Con 23 that relies on vulnerabilities with some cars’ and garages’ RF systems.
Famed for his earlier exploits with MySpace and SkyJack, he introduced a device called Rolljam that automates an attack that hackers have been aware of for years.
When a car owner clicks his or her key fob to unlock the car, the Rolljam jams the signal from reaching the car, thus encouraging the owner to click the key fob again, sending another signal. After jamming and saving the second signal, Rolljam plays back the first signal, unlocking the car for the still unwary owner. However, the hacker retains the next signal the car will be listening for, providing a way to unlock the car remotely from the key fob at a future date. Kamkar said that this is a problem that was solved years ago, with no reason for car owners to still be worried about it.