Da-Zhi Sun received a B.E. degree in electronic engineering from Nanchang Institute of Aeronautical Technology, Jiangxi, China, in 1999, an M.E. degree in control science and engineering from Nanchang University, Jiangxi, China, in 2002, and the Ph.D. degree in computer science and technology from Shanghai Jiao Tong University, Shanghai, China, in 2006. From 2006 to 2010, he was a lecturer at the School of Computer Science and Technology, Tianjin University, Tianjin, China. From 2007 to 2011, he also served as a postdoctoral researcher at the School of Computer Science and Engineering, Beihang University, Beijing, China. Since 2010, he was an associate professor at the College of Intelligence and Computing (previous name: the School of Computer Science and Technology), Tianjin University, Tianjin, China. His current research interests include privacy and security in the Internet of Things, applied cryptography, and information security.