Xiaolong Bai is a PhD student in the Department of Computer Science and Technology, Tsinghua University. His major research interest is to find and mitigate new vulnerabilities in mobile systems, including Android, iOS/OS X and so on. He has published several papers on top research conferences including IEEE Security & Privacy and ACM CCS. His hacking on mobile systems and applications has been acknowledged by major IT companies including Apple, Evernote and Tencent. He is now looking for job opportunities in mobile security and system security. His email address is firstname.lastname@example.org.