What is WannaCry/Wcry?
How WannaCry works on Friday, May 12, a massive ransomware attack called “WannaCry” hit a broad set of organizations in Europe. The Shadow Brokers leaked a bunch of NSA hacking tools onto the Internet. One of these tools is called EternalBlue, which is a perfect exploit for creating a Windows worm – software that attacks a Microsoft windows vulnerability and then installs on the next dispersed windows system as it traverses the Internet. WannaCry is the first piece of ransomware ever to propagate using this kind of worm technology.