I want to decorate certain Operation Contracts with an attribute to authorize the caller by custom logic, something like this:
[ServiceBehavior]
public class
Not out of the box - but WCF top-guru Juval Löwy had a very interesting article in MSDN Magazine about Declarative WCF Security which goes in the same direction.
Juval identified several key security scenarios, and wrapped each of them up into a WCF service behavior to be applied as an attribute on your service class on the server side. Quite an interesting read indeed !