This month we've got Brock Allen (http://brockallen.com/) coming to talk about Windows Identity Foundation (WIF).
Title: Introduction to Windows Identity Foundation in .NET 4.5
Claims-based identity is the new and preferred way to model security in applications. The Windows Identity Foundation (WIF) is Microsoft's update to the traditional .NET security system to integrate claims into any application built with .NET 4.5 or on Windows 8. In addition to the claims paradigm, WIF makes it easier to implement features like federation and single-sign-on in a secure and standards based fashion.