Prof. Liu works on mobile security, including location tracking, spoofing, and data mining. His teaching interests include programming, mobile app development, and software engineering. He has published over 40 papers in refereed journals and conferences and served as a program chair/committee member for multiple international conferences. He received his PhD in Computer Science from the Chinese University of Hong Kong and BEng in Eletronic Engineering from Hunan University. Before joining DKU, he was a senior lecturer at De Montfort University, UK; and prior to this position he was a Lecturer and then an Associate Professor at Xi’an Jiaotong-Liverpool University, China.