I am a developer and security researcher. I cofounded Censys, a security startup that helps organizations secure their Internet-facing assets. Censys is based in Ann Arbor, Michigan. I’m also a core contributor to the ZMap open-source project.
I defended my PhD at the University of Michigan in 2018. My advisor was J. Alex Halderman. During my PhD, my research on using Internet-wide scanning to study how cryptography was deployed on the Internet led to the discovery of the Logjam and DROWN attacks on TLS, and the creation of Censys.
Between my time in undergrad and graduate school, I spent nine years at the University of Michigan. I’ve been a teaching assistant for most of the security and introductory computer science courses at Michigan, and I was lucky to be able to lecture for the undergraduate computer security course in Fall 2016. I was also fortunate enough to occasionally sneak out and intern with some outstanding teams, including the Google Chrome security team in 2016, where I attempted to make OCSP suck less.