This upcoming Tuesday Microsoft is releasing four bulletins ranging from critical to moderate affecting all Windows OS. Detailed information can be found in the advance notification bulletin.

[1] http://technet.microsoft.com/en-us/security/bulletin/ms11-nov
[2] http://blogs.technet.com/b/msrc/archive/2011/11/03/advanced-notification-for-november-2011.aspx

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Guy Bruneau IPSS Inc. gbruneau at isc dot sans dot edu