Dr. Sean Peisert is a senior scientist at Lawrence Berkeley National Laboratory, where he leads computer security research and development. He is also both a full adjunct professor of Computer Science at the University of California, Davis and of Health Informatics at the University of California, Davis School of Medicine. He is also Director and PI of Trusted CI, the NSF Cybersecurity Center of Excellence.

His research interests cover a broad cross section of usable and useful computer security and privacy solutions, particularly in enabling secure and privacy-preserving scientific data analysis, and improving security in high-performance computing systems, research cyberinfrastructure, power grid and maritime control systems, and nuclear arms control monitoring and safeguards.

Professor Peisert is a member of the National Academies Forum on Cyber Resilience; Distinguished Expert for the NSA Annual Best Scientific Cybersecurity Paper Competition; ad hoc member of the American Red Cross Scientific Advisory Council Disaster Cycle Sub-Council; member of the IEEE Computer Society Board of Governors (BOG); past member of the National Academies Board on Army Research and Development (BOARD); past member of the DARPA Information Science and Technology (ISAT) Study Group, where he chaired three successful studies; past chair of the IEEE Computer Society Technical Committee on Security and Privacy; and a steering committee member and past general chair for the IEEE Symposium on Security and Privacy, the flagship conference for security research. His five-year tenure as editor-in-chief of IEEE Security & Privacy, from 2021–2025, is the longest of anyone in that role to date.

He was previously chief cybersecurity strategist for CENIC where he was responsible for cybersecurity strategy and implementation for CENIC's enterprise as well as for CalREN, a high-capacity network designed to meet the unique requirements of CENIC's constituent population of over 10,000 institutions and 20 million users.

In 2007, he was honored as a Research Fellow by the Institute for Information Infrastructure Protection, funded by the U.S. Department of Homeland Security, and in 2014, his work received an award from the Director of Science and Technology for the U.S. Office of the Director of National Intelligence (ODNI).

He received his Ph.D., Masters, and Bachelors degrees in Computer Science from UC San Diego. He is an IEEE Computer Society Golden Core Member and an ACM Distinguished Member.