Sencun Zhu received the B.S. degree in Precision Instruments from Tsinghua University, Beijing, China, in 1996 and the M.S. degree in Signal Processing from University of Science and Technology of China, Graduate School at Beijing, in 1999. He received the PhD degree in Information Technology from George Mason University in 2004. His research interests include network and systems security and software security. Currently he is working on issues related to ad hoc and sensor network security, cellphone security, and security and privacy in online social networks. His research is funded by NSF and ARL. He is a member of the Networking and Security Research Center and is also affiliated with the Cyber Security Lab.