Xiao is currently a Research Fellow in the Faculty of Information Technology at Monash University. He obtained his Ph.D. from Swinburne University of Technology. His research lies in the security analysis of the Android operating system and its apps, including analyzing the security mechanisms of the Android framework, potentially harmful behaviours of Android apps, and privacy leaks of Android apps. His recent research has a special interest in evaluating mobile health (mHealth) apps regarding their security and privacy.