Patterns & Practices WCF Security Guidancehttp://weblogs.asp.net/guybarrette/archive/2008/03/31/patterns-amp-practices-wcf-security-guidance.aspxThe P&P group recently published a set of WCF security related guidance. You'll find on this CodePlex site a series of articles and videos. http://www.codeplex.com/WCFSecurityenCommunityServer 2007 SP1 (Build: 20510.895)