140,000 computers at defense contractor firms and government agencies said to have been targeted. Thousands of defense-related documents have been stolen, including blueprints for F-15 fighter jets. Police say they believe North Korea was either planning a major internet attack, or running a long term campaign to steal as much information as possible. The traced IP address originating the hacking is said to be identical to the so-called Dark Seoul cyber-attack against South Korean banks and broadcasters in 2013. North Korea has always denied any involvement in past hacking attacks.”]