Mary Ellen Zurko is a technical staff member at the Massachusetts Institute of Technology (MIT) Lincoln Laboratory. She has worked in research, product prototyping and development, and has more than 20 patents. She defined the field of user-centered security in 1996, and has worked in cybersecurity for over 35 years. She was the security architect of one of IBM’s earliest clouds, and a founding member of NASEM’s Forum on Cyber Resilience. She serves as a Distinguished Expert for NSA’s Best Scientific Cybersecurity Research Paper competition, and is on the NASEM committee identifying the key Cyber Hard Problems for our nation. Her research interests include unusable security for attackers, Zero Trust architectures for government systems, security development and code security, authorization policies, high-assurance virtual machine monitors, the web, and PKI. Zurko received a S.B. and S.M. in computer science from MIT. She has been the only “Mary Ellen Zurko” on the web for over 25 years.