While cleaning my room today i found a hard copy of an ebook from Microsoft titled "Developer Highway Code" this ebook includes lots of tips regarding how to develop secured application.
While thinking if to save the book or give it away I've decided to search and see if there is still a copy of this book available to the public.
Not only that it is available.. there is also a new chapter regarding securing Windows Communication Foundation.
Microsoft UK - Developer Highway Code
Microsoft UK - Security - Lots of links to security docs