Black-hatted-extortionists are showing just how vulnerable our traffic control and other public transit systems are to hackers As the world becomes increasingly dependent on Internet-enabled technology, so too do our traffic systems. Unfortunately, security systems have not kept up to date with the problems posted by hackers. The sensors that detect vehicles, the transmitters that carry information to traffic lights, and even the computers housing all of this information are vulnerable to attacks. Take, for example, Cesar Cerrudo, who taught himself how to infiltrate cybernetic systems,