报告时间： 5月12日（星期二）15:30

报告地点：健B200

学术报告1

报告人：吕卓博士（University of Memphis） 

报告题目：Queuing the Trust: Secure Backpressure Algorithm against Insider Threats in Wireless Networks

报告内容简介：The backpressure algorithm is known to provide throughput optimality in routing and scheduling decisions for multi-hop networks with dynamic traffic. The essential assumption in the backpressure algorithm is that all nodes are benign and obey the algorithm rules governing the necessary information exchange and underlying optimization needs. Nonetheless, such an assumption does not always hold in realistic scenarios, especially in the presence of security attacks with intent to disrupt network operations. In this paper, we propose a novel mechanism, called virtual trust queuing, to protect backpressure algorithm based routing protocols from various insider threats, including blackhole, selective-forwarding, on-off and transmission-opportunity-wasting attacks, as well as from selfish behavior that prioritizes transmission opportunities. Our objective is not to design yet another trust-based routing to heuristically bargain security and performance, but to develop a generic solution with strong guarantees of attack resilience and throughput performance. To this end, we quantify a node's algorithm-compliance behavior over time and construct a virtual trust queue that maintains deviations from expected algorithm outcomes. We show that by stabilizing the virtual trust queue and the real packet queue, the backpressure algorithm not only achieves resilience, but also sustains the throughput performance under an extensive set of security attacks.

报告人简介：Dr. Zhuo Lu is currently an Assistant Professor of the Department of Computer Science, University of Memphis, USA. He earned his Ph.D. degree from North Carolina State University. Dr. Lu’s current research interests include network science, wireless and network security, cyber-physical systems and mobile computing. He has been actively involved in research projects funded by National Science Foundation, Department of Energy, Army Research Office, Air Force Research Lab, and NASA. He has frequently published research results in premier conferences and journals, such as IEEE INFOCOM, IEEE Transactions on Mobile Computing, IEEE Transactions on Dependable and Secure Computing, and IEEE Transactions on Wireless Communications. He has been serving on the technical program committees for IEEE Globecom, ICC, INFOCOM, MILCOM, and SmartGridComm. 

学术报告2

报告人：芦翔博士（中国科学院信息工程研究所）

 报告题目：物联网应用中的信息安全挑战 – 从智能电网到视频监控系统

报告内容简介：随着物联网技术的发展及应用，越来越多的智能应用走入人们生活。可随之而来的，除了便利的生活之外，也有越来越多的信息安全问题。本次报告将从物联网应用中两个常见系统，智能电网和视频监控系统出发，选择其中典型应用，探讨物联网应用中面临的独特的信息安全挑战，并介绍我们在智能电网安全和视频监控系统安全方面的一些工作。

报告人简介：芦翔，中国科学院信息工程研究所、信息安全国家重点实验室助理研究员。目前主要从事无线网络安全，信息物理融合系统安全等方面的研究工作。研究成果获授权技术发明专利2项，参与起草可信计算相关国家标准1项；参与出版专著1部；在国内外重要期刊或会议上发表SCI/EI检索论文10余篇。ACM会员，IEEE会员，中国计算机学会会员，中国密码学会会员。多次服务国际学术会议，是TPC member of IEEE ICC 2015；TPC member of Globecom 2015；Publicity Chair of WASA 2015。多个重要国际会议、期刊的审稿人，包括INFOCOM、ICC、Globecom、SmartGridComm、IEEE Transaction on Vehicle Technology、IEEE Transaction on Mobile Computing、IEEE Transaction on Smart Grid、IEEE Journal of Internet of Things等。