In the run up to this year's DEF CON, major car hacks seem to be a recurring theme. A few weeks ago we saw how hackers were able to remotely take control and shut down Chrysler vehicles -- now Tesla's Model S is the latest target. Researchers have figured out a way to digitally "hot wire" a Model S, Wired reports. They can also plant a Trojan that allows them to remotely control the car, including shutting it down. It's a sign that even the most technologically advanced car in the world will never be fully safe from security vulnerabilities. But while Chrysler had to issue a "voluntary safety recall" (in the form of a software update on a USB stick) for 1.4 million affected vehicles, Tesla has already sent out a fix to all Model S owners with an over-the-air update. Look at it this way: In one day every Model S owner is protected against these hacks, whereas it'll take much longer for the majority of Chrysler owners to get their patch (and there's a good chance it'll never reach them all).