North Korea Doubles Size of Its 'Cyber Army'

North Korean military's "cyber army" has boosted its numbers to 6,000 troops, the South Korean Defense Ministry said, double Seoul's estimate for the force in 2013, and is working to cause "physical and psychological paralysis" in the South. The new figure, disclosed in a ministry white paper, comes after the United States, South Korea's key ally, imposed new sanctions on North Korea for a cyberattack on Sony Pictures Entertainment.