History: "Shadow Brokers" hacked the NSA in April 2016, and leaked the American cyber weapon ETERNALBLUE for the Microsoft Windows system. WannaCry's developers used ETERNALBLUE as the basis of their ransomware (not confirmed by experts), which gains access to a Windows computer, through a Windows vulnerability which was patched by MS on 3/14/17.  "Organizations that lacked this security patch were affected for this reason, and there is so far n...