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Federal authorities are investigating the threat of a 9/11-type attack issued by the hackers allegedly behind the Sony Pictures hack.
Pamela Brown reports on the scandalous e-mails leaked from some of Hollywood's top movie makers.
Pamela Brown reports on Sony's cyber hack and how it is worse than first thought.
The hunt to track down ISIS executioner 'Jihadi John' is underway after another beheading video surfaces.
Pam Brown reports on federal law enforcement flying small planes loaded with gear to spy on Americans' cell phone calls.
How did three U.S. teenagers becoming radicalized? Pamela Brown reports.
Why was the Khorasan bomb-maker such an important target? CNN's Pamela Brown has the details.
Authorities stopped three Colorado teenage girls on their way to join ISIS in Iraq and Syria. Pamela Brown reports.