According to reports, there is an ongoing, fast and widespread ransomware attack against Microsoft Windows machines, with reports of as many as 200,000 infections in as many as 150 countries (according to Europol on Sunday, 14 May 2017). The software can run in as many as 27 different languages, matching the operating system language settings.
This malware is variously known as WannaCry, WCry, Wanna Decryptor, or Wanna Derypt0r and was discovered the morning of May 12th, 2017. It works by encrypting your data and requesting a ransom