Educational Background 2001, Ph. D. Computer Science, Fudan University, China. 1988, M.S. Computing Science, Dalian University of Science & Technology, China. 1984, B.S. Mathematics, Hunan Normal University, China. Work Experiences 2011-Now: Professor, Dean in College of Computer & Software, Nanjing University of Information Science & Technology. Director in Jiangsu Provincial Center for Network Security Engineering. 2003-2010: Professor, Vice Dean in organization of Computer & Communication, Hunan University.Director in Hunan Provincial Key Laboratory of Network & Information Security, 2006-2007: Visiting Professor in University College London, UK. 2008-2010: Visiting Professor in University of Warwick, UK. 2000-2003: Professor, Dean in Department of Computer Science and Technology in Hunan University of Technology. 1994-1999: Associate professor in Department of Mathematics in Xiangtan Normal University 1988-1993: Lecturer in Department of Mathematics in Xiangtan Normal University 1984-1987: Assistant lecturer in Department of Mathematics in Xiangtan Normal University