Chester Wisniewski, senior security researcher with Sophos, talks to us about the latest cyber breach.
The biggest difference between the two? This year Defcon organizers disinvited the Feds in the wake of NSA surveillance revelations. While Black Hat's keynote speaker will be none other than NSA Director General Keith Alexander.
Facebook's new Graph Search feature has rivals like Google and Yelp paying attention to the social media giant. And, a look at a piece of mysterious malware called "Red October" that has been secretly attacking government computer systems for five years.