Microsoft notifications sent this out in email today (November 10, 2011) regarding fraudulent digital certificates:
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Title: Microsoft Security Advisory Notification
Issued: November 10, 2011
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Security Advisories Updated or Released Today ==============================================
* Microsoft Security Advisory (2641690)
– Title: Fraudulent Digital Certificates Could Allow Spoofing
– http://technet.microsoft.com/security/advisory/2641690
– Revision Note: V1.0 (November 10, 2011): Advisory published.