US-CERT has released a threat alert regarding a spreading global ransomware attack. There have been a number of reports of WannaCry ransomware from a number of different countries. The WannaCry ransomware may be exploiting an identified vulnerability in Microsoft operating systems. Microsoft released a patch as part of the March 2017 Security Rollup that addressed the vulnerability. If a resource has been updated with the March 2017 Security Rollup or later, then the vulnerability in question should be resolved. More information on this threat can be found at US-CERT.