THANKS NSA!
Global Ransomware Attacks 74 Nations - Used NSA Hacking Tools "At A Scale Never Seen Before"
A hacking tool known as 'eternal blue', developed by US spies has been weaponised by the hackers - "This is a major cyber attack, impacting organisations across Europe at a scale I've never seen before,"
http://www.zerohedge.com/news/2017-05-12/massive-ransomware-attack-goes-global-huge