Revision Note: V1.9 (December 17, 2010): Removed the FAQ entry, originally added December 14, 2010, about a non-security update enabling Microsoft Outlook to opt in to Extended Protection for Authentication. Advisory Summary:Microsoft is announcing the availability of a new feature, Extended Protection for Authentication, on the Windows platform. This feature enhances the protection and handling of credentials when authenticating network connections using Integrated Windows Authentication (IWA).