The use of Web Services for Business-to-Business (B2B) and Business-to-Consumer (B2C) transactions has created risks that expose critical assets to increasingly greater threats. Enterprise Web Services Security provides the information developers, application architects, and security professionals need to build security policies and strategies from the ground up in a Web Services environment. Most security books focus on computer or network security in isolation, relegating the other areas to overview chapters or appendices. A single-system view of security, however, is not adequate to describe a distributed Web Services-based environment as it causes the developer to have to piece together material from several resources in order to create secure Web sites and services.