Dr. James T. Yu is an associate professor at DePaul University where he is teaching and researching in the areas of Wireless LAN security, Fault Tolerant Networks, Voice over IP, and XML-based Network Management. He served as the Program Chair of the Telecommunications and Data Networking Committee, responsible for the curriculum development of the Ph.D., M.S., and B.S. degrees. He was the director of Network Technology at ARBROS Communications, responsible for network architecture, design, and management. He had 15 years of experience at Bell Laboratories working on telecommunications switching development and information technology projects and was appointed to Distinguished Member of Technical Staff in 1991. Dr. Yu has more than 40 refereed journal and conference publications, and gave five networking tutorials at IEEE and international conferences. He was often invited to give talks at the local workshops organized by the IEEE Communications Society. He had industry consulting at US Cellular, Motorola, and Integrated Solutions. He received the MS and Ph.D degrees in Computer Sciences from Purdue University.