Americans on Thursday marked the 13th anniversary of the September 11, 2001 attacks.
In recent years platforms like Twitter have given Islamic militants an unprecedented, unfiltered ability to intimidate their opponents.
Reporter James Foley's beheading in the Middle East was part of a long tradition of sending a gruesome message. Continue reading →
Despite public outrage and official denials, the practice of negotiating with terrorists is routine and effective. Continue reading →
Women have a huge advantage over men when it comes to infiltrating security checkpoints, experts say.
It took years and many deaths for anyone to realize the devices were fakes; here's why. Continue reading →
Facebook, YouTube, Twitter and Reddit lend a hand in catching crooks, but also bring the story closer to home. ->
A hacker group breached the PBS website, posting false stories and seizing sensitive information.
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