QIN Zhongyuan （zyqin@seu.edu.cn） received the MS degree in computer science and the PhD degree in communication and information system from Xian Jiaotong University， China in 1999 and 2003， respectively. He is currently an associate professor in the School of Information Science and Engineering， Southeast University， China. His research interests include wireless network security and Android security. He has published more than 40 papers in refereed international journals and conference proceedings.

PAN Wanpeng （pan.wanpeng@zte.com.cn） received his MS degree in network and information security from Northwestern Polytechnical University， China in 2007. He is the chief security director of terminal business division at ZTE Corporation. His research interests include Android security and network security.

XU Ying （xu.ying6@zte.com.cn） received the BOM degree in Information Management and the MS degree in computer application from Zhengzhou University， China in 2005 and 2010. Now she is working with ZTE. Her research interests focus on software testing.

FENG Kerong （fengkerong@163.com） received the BE degree in communication engineering from China University of Petroleum in 2013. Now she is pursuing her MS degree at Southeast University， China. Her research interests focus on security in Android.

YANG Zhongyun （midcloud@foxmail.com） received the MS degree in information security from Southeast University， China in 2014. He is currently a software engineer at CoolPad Corporation. His research interests focus on security in Android.