Revision Note: V1.1 (January 14, 2013): Corrected the disallowed certificate list effective date to “Monday, December 31, 2012 (or later)” in the FAQ entry, “After applying the update, how can I verify the certificates in the Microsoft Untrusted Certificates Store?”Summary: Microsoft is aware of active attacks using one fraudulent digital certificate issued by TURKTRUST Inc., which is a CA present in the Trusted Root Certification Authorities Store. This fraudulent certificate could be used to spoof content, perform phishing attacks, or perform man-in-the-middle attacks. This issue affects all supported releases of Microsoft Windows.

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