Abstract: Conventional wireless security assumes wireless communications are rightful and aims to protect them against malicious eavesdropping and jamming attacks. However, emerging infrastructure-free mobile communication networks (such as D2D, V2V, M2M, etc.) are likely to be illegally used (e.g., by criminals or terrorists) but difficult to be monitored, thus imposing new challenges on the public security. In this talk, we present a paradigm shift of wireless security to the surveillance of infrastructure-free mobile communications, by exploiting legitimate eavesdropping and jamming jointly. In particular, the new approach of proactive eavesdropping via cognitive jamming/spoofing is proposed to maximize the eavesdropping rate of the suspicious communication link, which is shown to outperform the conventional passive eavesdropping.  

       Dr. Rui Zhang received the B.Eng. (First-Class Hons.) and M.Eng. degrees from National University of Singapore in 2000 and 2001, respectively, and the Ph.D. degree from Stanford University, Stanford, CA USA, in 2007, all in electrical engineering. From 2007 to 2009, he worked at the Institute for Infocomm Research, ASTAR, Singapore, where he now holds a Senior Scientist joint appointment. Since 2010, he has joined the Department of Electrical and Computer Engineering of National University of Singapore where he is now an Associate Professor. His current research interests include energy-efficient and energy-harvesting-enabled wireless communication, wireless information and power transfer, MIMO, cognitive radio, cooperative communication, UAV-assisted communication, wireless surveillance, and optimization methods. He has published over 250 papers, which have been cited more than 1,2000 times. He was the recipient of the 6th IEEE Communications Society Asia-Pacific Region Best Young Researcher Award in 2011, and the Young Researcher Award of the National University of Singapore in 2015. He was the co-recipient of the IEEE Marconi Prize Paper Award in Wireless Communications in 2015, and the IEEE Communications Society Asia-Pacific Region Outstanding Paper Award in 2016. He has served for over 30 international conferences as TPC Co-Chair or Organizing Committee Member, and as the guest editor for 8 special issues in IEEE and other internationally refereed journals. He has served as an elected member of the IEEE Signal Processing Society SPCOM and SAM Technical Committees, and the Vice Chair of the IEEE Communications Society Asia-Pacific Board Technical Affairs Committee. He has been the primary voting representative of IEEE Signal Processing Society in the IEEE Technical Committee on RFID (CRFID). He has been an editor for the IEEE Transactions on Wireless Communications, the IEEE Transactions on Signal Processing, the IEEE Journal on Selected Areas in Communications (Green Communications and Networking Series), and the IEEE Transactions on Green Communications and Networking. He has been listed in the World’s Most Influential Scientific Minds, also known as a Highly Cited Researcher, by Thomson Reuters since 2015.