Edited versions of selected papers from a 2002 IEEE COMPSAC workshop held in Oxford, UK, together with several additional papers on state- of-the-art topics, cover key developments, directions, and challenges for securing the semantic Web, managing and enforcing security policies, and securing emerging systems such as multimedia and collaborative networks. The audience for the text includes students in upper-level undergraduate and graduate courses in information security that have a focus on Web security as well as technologists, researchers, managers, and developers who want o know more about emerging security technologies