Microsoft is releasing the a large number of security bulletins for newly discovered vulnerabilities.  All home & corporate users should promptly update their systems:

https://technet.microsoft.com/library/security/MS15-jul

https://isc.sans.edu/forums/diary/July+2015+Microsoft+Patch+Tuesday/19919/

http://blogs.technet.com/b/msrc/archive/2015/07/14/july-2015-security-updates.aspx

Today we released security updates for Microsoft Windows, Microsoft Office, Microsoft SQL Server, and Internet Explorer.   As a best practice, we encourage customers to apply security updates as soon as they are released. For more information about this month’s security updates and advisories visit the Security TechNet Library.