The Defcon Badge: Sleek, Stylish and Hackable

Here's a first look at the Defcon 18 badge, set to be unveiled Thursday at the annual hacker conference in Las Vegas.

Black Hat Researchers Find 'Free' Parking in San Francisco

Tech-savvy hackers discover San Francisco's parking meters can't discern a genuine payment card from a fake.

Yahoo Reveals Its 'Most Significant Redesign Ever'

Users can now personalize Yahoo.com to check other sites, including Facebook and Gmail, as well as add Web widgets that link to more than 65 other sites.