Sze Yiu Chau is a PhD candidate at Purdue University, Department of Computer Science, working with Prof. Ninghui Li and Prof. Aniket Kate. His research interest is mainly focused on the (in)secure design and implementation of widely deployed systems and network protocols. In particular, he and his colleagues have investigated exploitable weaknesses in many popular content delivery apps on Android, as well as the robustness of X.509 certificate validation and RSA signature verification implemented in various open source software, which led to the discovery of many vulnerabilities with varying degrees of severity.