North Korea's cyber spies exposed: Inside the secretive cyber-warfare cell Bureau 121 - Independent.ie
Bureau 121: North Korea's hacker army 'could kill people and destroy cities', says defector who trained them | BelfastTelegraph.co.uk
Artofthehak - Bureau 121, ( associated names Dark Seoul, Guardians of Peace) according to defectors, is one of six divisions of North Korea's General Bureau of Reconnaissance that is charged with cyber-intelligence
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