SACHIN S. SHETTY, PHD, is an Associate Professor in the Virginia Modeling, Analysis, and Simulation Center and Department of Modeling, Simulation and Visualization Engineering at Old Dominion University. CHARLES A. KAMHOUA, PHD, is a researcher at the US Army Research Laboratory's Network Security Branch. LAURENT L. NJILLA, PHD, is a research electronics engineer and the program manager of Disruptive Information Technology at the Information Directorate/Cyber Assurance Branch of the Air Force Research Laboratory.