Defcon Hacking Contest Targets Big Corporations (VIDEO)

The world's biggest conference of so-called 'White Hat' hackers (those who do not engage in malicious hacking) has taken place in Las Vegas, and it has given some big companies food for thought.

A 'social engineering' contest at the conference, which involves tricking people into revealing information that leaves their systems vulnerable, revealed that some of the world's biggest corporations were susceptible to attack.