1. Center for Secure Information Systems and Department of Information and Software Systems Engineering, George Mason University, Fairfax, VA 22030-4444, USA. E-mail: jajodia@gmu.edu
2. MS/CIS Department, Rutgers University, Newark, NJ 07102, USA. E-mail: atluri@andromeda.rutgers.edu
3. Department of Computer Science and Engineering, Pennsylvania State University, University Park, PA 16802, USA. E-mail: keefe@cse.psu.edu
4. The MITRE Corporation, 1820 Dolley Madison Boulevard, McLean, VA 22102-3481, USA. E-mail: mccollum@mitre.org
5. Department of Computer Science, Old Dominion University, Norfolk, VA 23529-0162, USA. E-mail: mukka@cs.odu.edu