Ulrich Lang 
Developing Secure Distributed Systems with CORBA [PDF ebook] 

This new book is a clearly written, well structured guide to building secure distributed applications with CORBA. It helps securing CORBA applications, integrating security infrastructure with CORBA applications, and evaluating the security effectiveness of distributed applications. You get a comprehensive study of the CORBA security architecture, providing you with a better understanding of its goals and limitations. It serves as your complete reference for understanding security in distributed systems.