Joseph is an EFF Technology Fellow focusing on tools for secure communication and HTTPS security. He is also a post-doctoral research fellow at Stanford University with the applied cryptography group. His research has spanned a variety of topics in cryptography and security including HTTPS and web security, passwords and authentication, cryptocurrencies, end-to-end encrypted communication tools, and side-channel cryptanalysis. He holds a PhD from the University of Cambridge and BS and MS degrees in computer science and cryptography from Stanford University. He has previously worked as a researcher at Princeton University and as engineer at Google, Yahoo! and Cryptography Research, Inc.