On March 14th, Microsoft released a security bulletin, MS17-010 https://technet.microsoft.com/en-us/library/security/ms17-010.aspx which resolves a security vulnerability within the Microsoft Server Message Block 1.0 (MSBv1) which was used in the ransomware cyber attack named WannaCry.
Strategy software does not use the Microsoft Server Message Block and therefore is not directly vulnerable to this exploit. Strategy certifies major versions of operating systems and as a best practice, advises customers to keep their systems up to date with the latest patch level.