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You might want to check. As part of its monthly patch release schedule, Microsoft issued 12 security bulletins yesterday that cover 21 vulnerabilities.
The bugs fixed by the patches affect Windows, Windows Media Player, Internet Explorer and Microsoft Outlook. They cover vulnerabilities such as denial of service attacks and remote code execution that could lead to full system compromise.
Of the vulnerabilities, eight are considered critical. One of the security problems fixes an exploit in Microsoft's Word program to deal with a virus called Backdoor.Ginwui, which opens a backdoor on the compromised computer. The virus was first found in mid-May.