North Korea’s main spy agency has a special cell called Unit 180 that is likely to have launched some of its most daring and successful cyber attacks, according to defectors, officials and internet security experts. North Korea has been blamed in recent years for a series of online attacks, mostly on financial networks, in the United States, South Korea and over a dozen other countries.
http://www.reuters.com/article/us-cyber-northkorea-exclusive-idUSKCN18H020
