Could you get "carhacked"? The growing risk of keyless vehicle thefts and how to protect yourself

You arrive home and toss your car keys on a table near your front door. It's an ordinary habit that is all today's thieves need to launch a "relay attack" to capture the signal from your key fob, unlock your car and drive it away. And it's just one of the high-tech methods more criminals are adopting to steal cars. 

Experts say in recent years, car thieves have increasingly targeted keyless entry vehicles by breaching the computer systems that are built into the cars' communication network.