I am now working towards a PhD in CS, with Prof. Ninghui Li and Prof. Aniket Kate as my advisors. I am also a member of The Center for Education and Research in Information Assurance and Security (CERIAS) at Purdue.

Born and raised in Hong Kong, I speak fluent Cantonese, Mandarin Chinese (Putonghua) and English. Prior to joining Purdue, I received a BSc in Information Technology from Department of Computing, The Hong Kong Polytechnic University with First-class honours.

Research Interest

My research interest is mainly on the (in)security of the design and implementation of systems and network protocols. In particulary, I am currently working on a project that leaverages a principled approach to test the validation logics that are being implemented in various certificate handling libraries. I am honoured to be funded by the Purdue Research Foundation for this project.


  1. Analyzing Operational Behavior of Stateful Protocol Implementations for Detecting Semantic Bugs
    Endadul Hoque; Omar Chowdhury; Sze Yiu Chau; Cristina Nita-Rotaru; Ninghui Li
    [IEEE/IFIP International Conference on Dependable Systems and Networks (DSN) 2017] (Paper)

  2. SymCerts: Practical Symbolic Execution For Exposing Noncompliance in X.509 Certificate Validation Implementations
    Sze Yiu Chau; Omar Chowdhury; Endadul Hoque; Huangyi Ge; Aniket Kate; Cristina Nita-Rotaru; Ninghui Li
    [IEEE Symposium on Security and Privacy (Oakland) 2017] (Paper|Errata|Talk|CSAW '17 (Applied Research) Finalist)

  3. Detecting Specification Noncompliance in Network Protocol Implementations
    Endadul Hoque; Omar Chowdhury; Sze Yiu Chau; Cristina Nita-Rotaru; Ninghui Li
    [USENIX ATC '16 Poster]



My Erdös number is 4, with multiple paths through my advisors:

  • Chau → Kate → Goldberg → Stinson → Erdös
  • Chau → Kate → Zaverucha → Stinson → Erdös
  • Chau → Li → Bertino → Wagstaff → Erdös