WCF Declarative Security
Juval Lowy one of the .net 3.0 pioneers and the founder of
IDesign.net and the author of one of the earliest books about WCF, continues his great work with a great article on MSDN Magazine about different security options available in WCF.
Declarative WCF SecurityFor a full list of Juval Lowy's articles on MSDN Magazine
Check Here