http://blogs.msdn.com/architectsrule/archive/2008/07/02/secure-your-soa-with-the-patterns-practices-wcf-security-guide.aspxThe Microsoft P&P team released the beta of the WCF Security guide This is the Microsoft playbook for Windows Communication Foundation (WCF ) It shows you how to build secure Web services using WCF. It's a compendium of proven practices, product teamen-USCommunityServer 2.1 SP1 (Build: 61025.2)