Defcon brings together security pros and hackers

Check out what's going on at the 16th annual Defcon security conference in Las Vegas. It brings together mainstream security professionals and underground hackers for a unique perspective on security.

The 16th annual security conference begins

It's an unlikely pairing: security officials and underground hackers. Every year, they make peace and share information at Defcon, Black Hat's sister conference. CNET's Kara Tsuboi reports from the 16th annual event that begins in Las Vegas this weekend.