 Currently, he is the director of U.S. DHS Center of Excellence (COE) in Visual Analytics (VACCINE).and Center for Education and Research in Information Assurance and Security (CERIAS)

He received his Ph.D., master, and bachelor degrees in Computer Science from Ohio State University in 1991, 1987, 1986 respectively.He joined Purdue University as an associate professor in 2000, was promoted to a full professor in 2006.