North Korean hackers stole US fighter jet blueprints

As part of a years-long cyber attack, North Korean hackers have allegedly stolen 42,000 materials from South Korean organizations and government agencies, including blueprints for F-15 fighter jet wings.

The hacking began in 2014 and was first detected in February, according to South Korea's police cyber investigation unit. Reuters reports that more than 40,000 of the materials stolen were defense-related.

However, none of the defense-related materials were secret, and there was no security breach, said a Defense Ministry official. Representatives for the two organizations affected most recently, including Korean Air Lines, also stated that the leaked documents were not classified.