Dr. Tzi-cker Chiueh is a Professor in the Computer Science Department of Stony Brook University, and the Chief Scientist of Rether Networks Inc. He received his B.S. in EE from National Taiwan University, M.S. in CS from Stanford University, and Ph.D. in CS from University of California at Berkeley in 1984, 1988, and 1992, respectively. He received an NSF CAREER award in 1995, and has published over 130 technical papers in refereed conferences and journals in the areas of operating systems, networking, and computer security. He has developed several innovative security systems/products in the past several years, including SEES (Secure Mobile Code Execution Service), PAID (Program Semantics-Aware Intrusion Detection), DOFS (Display-Only File Server), and CASH.