Now Playing: 08-22-12 Marketplace Tech Report

Any computer hooked up to the Internet is a potential victim of malicious hackers. Of course, it's one thing to be hacked on a desktop PC, it's quite another to be hacked in your car, traveling at 70 miles an hour, with a computer that controls your brakes and steering. It's not time to freak out -- yet. But automakers and security experts will have to learn to evolve faster than the bad guys.