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Events on Monday 15 May 2017 1
2017WannaCry ransomware attackGlobal cyberattack cripples hospitals and businessesThe WannaCry ransomware worm spread rapidly across more than 150 countries, exploiting a leaked NSA vulnerability in Windows to encrypt files and demand Bitcoin payments. It severely disrupted Britain's National Health Service and hit organizations from FedEx to Renault. Researchers traced the attack to North Korea-linked hackers.