报告人：Dr. Sencun Zhu
报告题目：Mobile App Reputation Manipulation: Characteristics and Detection
Abstract: Driven by monetary reward, some mobile app developers turn to the underground market to buy positive reviews instead of doing legal advertisements. These promotion reviews are either directly posted in app stores like iTunes and Google Play, or published on some popular websites with many app users. In this talk, I will first introduce our research on unveiling this underground market and statistically analyzing the promotion incentives, characteristics of promoted apps and suspicious reviewers. Then we propose several robust and effective mechanisms to identify both promoted apps and the groups of hired promoters. Finally, some ongoing research directions will be discussed.
Bio: Dr. Sencun Zhu is an associate professor of Department of Computer Science and Engineering at The Pennsylvania State University (PSU). He received the B.S. degree in precision instruments from Tsinghua University, Beijing, China, the M.S. degree in signal processing from the University of Science and Technology of China, Graduate School at Beijing, China, and the Ph.D. degree in information technology from George Mason University, VA, USA, in 1996, 1999, and 2004, respectively. His research interests include wireless and mobile security, software and network security, fraud detection, and user online safety and privacy. His research has been funded by National Science Foundation, National Security Agency, and Army Research Office/Lab. He received NSF Career Award in 2007 and a Google Faculty Research Award in 2013. More details of his research can be found in http://www.cse.psu.edu/~sxz16/
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