DaeHun Nyang is a Full Professor at the Department of Computer Science and Engineering at Inha University, Korea. He obtained his Ph.D. in Computer Science from Yonsei University, Korea, in 2000. He is a member of the board of directors and the editorial board of the Korean Institute of Information Security and Cryptology and a section editor of the ETRI Journal. His research interests include cryptography, privacy, usable security, network security, and system security. He is a member of IEEE.