I am an Associate Professor at the
University of Oxford, where I am a member of the
Security and
Systems research themes.
Previously, I was an Assistant Professor in the
Department of Computer Science at the
University of British Columbia and remain affiliated with the
UBC Security & Privacy Group and the
Systopia Lab.
My research asks a fundamental question:
How do we make complex systems observable enough to secure, understand, and safely modify them? I explore this question through work on system auditing and accountability, intrusion detection, and mechanisms for safely extending and optimizing complex systems.