One week ago today, the Shadow Brokers (an unknown hacking entity) leaked the Equation Group’s (NSA) FuzzBunch software, an exploitation framework similar to Metasploit. In the framework were several unauthenticated, remote exploits for Windows (such as the exploits codenamed EternalBlue, EternalRomance, and EternalSynergy). Many of the vulnerabilities that are exploited were fixed in MS17-010, perhaps the most critical Windows patch in almost a decade.

https://zerosum0x0.blogspot.com/2017/04/doublepulsar-initial-smb-backdoor-ring.html