http://blogs.msdn.com/publicsector/archive/2008/08/04/improving-web-services-security-guide-v1-0-released-by-p-p-team.aspxThe Patterns & Practices Team have recently released v1.0 of the web services security guide (in PDF format) that shows how to make the most out of WCF. With end-to-end application scenarios, it shows you how to design and implement authenticationen-USCommunityServer 2.1 SP1 (Build: 61025.2)