As a registered member of SearchSOA.com, you're entitled to a complimentary copy of SOA Security written by Ramarao Kannengati and Prasad Chodavarapu and published by Manning Publications. " Protecting confidentiality of messages using encryption" focuses on defining SOA, Web services, and XML.
This chapter discusses how the web services standards support selective encryption of messages. Encryption in web services is built on the solid foundations of encryption technology that is widely used on the web. "Protecting confidentiality of messages using encryption" will show you how you can snoop on the network to intercept messages without the consent of the sender or the receiver.