Avira TechBlog Wrote:
Microsoft released Security Advisory 2718704 which revokes some certificated which apparently were used to sign the trojan Flame__.
In a blog post, Microsoft explains how they discovered that some components of the malware have been signed by certificates that allow software to appear as if it was produced by Microsoft. The certificates issued by the Terminal Services licensing certification authority, which are intended to only be used for license server verification, were also used to sign code and make it look like as if it was originated from Microsoft.
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We highly recommend that all users apply this update immediately.
Read the post here: http://techblog.avira.com/2012/06/04/microsoft-revokes-certificates-used-to-sign-the-flame-trojan/en/
To Install this update visit http://update.microsoft.com/microsoftupdate