On May 12, 2017 a ransomware attack began impacting organizations all over the globe and in just a few days had spread to over 230,000 computers across 150 countries. It’s quite a story with the vulnerability used to spread the ransomware coming from leaked NSA data, speculation that the malware authors were not particularly sophisticated despite the breadth of the attack, possible links to North Korea, and a security researcher stumbling upon a kill switch that largely halted further spread of the malware.

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