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Cyber Science Department

Jeff Kosseff

Jeff Kosseff is an associate professor of cybersecurity law in the United States Naval Academy’s Cyber Science Department. He is the author of four books and more than 20 academic journal articles.  

In fall 2023, Johns Hopkins University Press will publish his latest book, Liar in a Crowded Theater: Freedom of Speech in a World of Misinformation, which examines and defends legal protections for false speech. In 2019, he was named an Andrew Carnegie Fellow by the Carnegie Corporation of New York, to support his 2022 book The United States of Anonymous: How the First Amendment Shaped Online Speech. His 2019 book, The Twenty-Six Words That Created the Internet, traced the history of Section 230 of the Communications Decency Act. He also is the author of Cybersecurity Law, a textbook and treatise whose third edition was published by Wiley in 2022. 

His articles have appeared in Iowa Law Review, Illinois Law Review, Wake Forest Law Review, Berkeley Technology Law Journal, Computer Law & Security Review, and other law reviews and technology law journals. His research interests include cybersecurity regulation, online intermediary liability, and the law of armed conflict as applied to cyberspace.

Jeff practiced cybersecurity, privacy, and First Amendment law at Covington & Burling, and clerked for Judge Milan D. Smith, Jr. of the United States Court of Appeals for the Ninth Circuit and Judge Leonie M. Brinkema of the United States District Court for the Eastern District of Virginia. Before becoming a lawyer, he was a technology and political journalist for The Oregonian and was a finalist for the Pulitzer Prize for national reporting and recipient of the George Polk Award for national reporting. 

He received a J.D. from Georgetown University Law Center, and a B.A. and M.P.P. from the University of Michigan.

Jeff can be reached at

Curriculum Vitae


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