Email: jeff ‑ citizenlab.ca  •  PGP Key: key  •  SSH Key: key
I'm currently a postdoctoral fellow at the Citizen Lab.

Research

I'm fighting to bring transparency to Internet censorship and surveillance. I use reverse engineering techniques to reveal how software behavior harms your Internet freedom. Sometimes this behavior is intentional. For instance, some software censors what you say and secretly phones home information about your conversation if you talk about sensitive topics. Sometimes the harm is accidental. For instance, some software communicates your personal information but improperly encrypts it such that someone listening in can easily decrypt it. My graduate research was advised by Jed Crandall and Jared Saia.

Selected Publications and Reports

2017

I successfully defended my dissertation in December 2017: Measuring Decentralization of Chinese Censorship in Three Industry Segments. My graduation is May 2018.

2016

2015

2014

2013

2012

2011

Selected Talks

Other

What keywords trigger TOM-Skype censorship and surveillance? (updated daily TOM-Skype has been discontinued by TOM Online)
What keywords trigger Sina UC censorship? (updated daily Sina UC has been discontinued by Sina)
How does SafeConnect network access control (NAC) software open your machine to attacks?
Some malware analysis tools

Teaching