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WannaCry ransomware explained: What it is, how it infects, and who was responsible

Josh Fruhlinger | Sept. 28, 2017
Stolen government hacking tools, unpatched Windows systems, and shadowy North Korean operatives made WannaCry a perfect ransomware storm.

The Lazarus Group in turn is a hacking group that has been tied to North Korea. Beginning their run in 2009 with crude DDoS attacks on South Korean government computers, they've become increasingly sophisticated, hacking Sony and pulling off bank heists.

On the other hand, without an explicit claim of responsibility, it's impossible to know for sure that either the initial wave of WannaCry attacks or the later EternalBlue-driven explosion was directed by North Korea, since malware code is copied liberally by various groups.

 

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