The IWIA workshop is part of a comprehensive IEEE program to realize the potential of IT to deliver the information it produces and stores with high assurance. The proceedings covers research, applications, policy-related issues, and standards on information assurance and security and underlying technologies. The goal of this workshop is to bring together researchers and practitioners from governmental, defense, intelligence, and civilian areas and to stimulate discussions on current and future problems as well as solutions. The scope once again reflects the broad and rapidly changing threat environment in which information assurance must be provided. In addition to the now traditional subject areas of intrusion detection and prevention, there are also significant contributions in the area of evaluation criteria and their application along with special topics such as satellite security and requirements engineering.