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Dr. Charles P. Pfleeger is an independent computer and information system security consultant. Through Pfleeger Consulting Group, he provides threat and vulnerability analysis, system design review, certification prep, training, expert testimony, and general security advice to clients worldwide. He was Master Security Architect at Cable and Wireless and Exodus Communications; and Professor in Computer Science at U. of Tennessee. Dr. Shari Lawrence Pfleeger is Director of Research for the Institute for Information Infrastructure Protection at Dartmouth, a consortium of leading universities, national laboratories and nonprofit institutions dedicated to strengthening U.S. cyber infrastructure.