"Critical Infrastructure Protection II" is a specialized book that addresses the latest research findings and innovative applications in the interdisciplinary field of critical infrastructure protection. It emphasizes the necessity of linking science, technology, and policy to develop complex solutions aimed at securing information as well as computer and network resources across various sectors of critical infrastructure. This book is the second volume of an annual series published by the International Federation for Information Processing (IFIP) Working Group 11.10. This international community of scholars, engineers, practitioners, and decision-makers is dedicated to promoting research, development, and implementation in the field of infrastructure protection. The volume includes a selection of twenty edited contributions presented at the second annual IFIP WG 11.10 International Conference on Critical Infrastructure Protection, which took place in the spring of 2008 at George Mason University.