The WannaCry ransomware attack is an ongoing cyber-attack targeting the Microsoft Windows operating system. It has infected more than 230,000 computers worldwide, with the software demanding ransom payments in Bitcoin. Microsoft has also issues a “critical” patch for their users to remove the underlying vulnerability, which we have shared above.
Here’s the patch: https://technet.microsoft.com/en-us/library/security/ms17-010.aspx
Source: Unbelievable Facts