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More articles by 'Rachel Hahn'
Cyber warfare: How North Korea benefits from unpredictability
Outlining North Koreans present and future threats in the new battlefield of cyber warfare
Wake up to North Korea’s cyber-threats
Frequently discussed in South Korea, Pyongyang's cyber attacks only started to get attention elsewhere after Sony
The Sony hack: North Korean cyber capabilities get the world’s attention
Considered technologically backward, with late-2014 attack Pyongyang sent leaders scrambling to respond