Erica Lonergan Headshot

Erica Lonergan

Assistant Professor of International and Public Affairs

Personal Details

Focus Areas: Cybersecurity, International Security, Security Studies, Grand Strategy, National Security

Dr. Erica Lonergan (née Borghard) is an Assistant Professor in the School of International and Public Affairs at Columbia University. Previously, Erica held several positions at the United States Military Academy at West Point. These include serving as an Assistant Professor in the Departments of Social Science and Electrical Engineering and Computer Science; a fellow at the Army Cyber Institute; and the Executive Director of the Rupert H. Johnson Grand Strategy Program. She has also held positions as a senior fellow at the Carnegie Endowment for International Peace and the Atlantic Council.

Beyond her academic and research appointments, Erica has an extensive background in strategy and policy. Erica currently serves as a member of the Board of Visitors of the U.S. Army War College. Previously, she was a lead writer of the 2023 U.S. Department of Defense Cyber Strategy, as well as the Congressionally-mandated Department of Defense Cyber Posture Review. Prior to that, Erica served as a Senior Director on the U.S. Cyberspace Solarium Commission, a bipartisan Congressional commission established to develop a new strategy and policies to defend the United States in cyberspace. Erica continues to serve as a Senior Advisor to the Cyberspace Solarium Commission 2.0. She also held an appointment as a Council on Foreign Relations International Affairs Fellow, with placement at JPMorgan Chase and U.S. Cyber Command at the Cyber National Mission Force.

Erica has published widely on cybersecurity, grand strategy, military affairs, and international security. Her book, Escalation Dynamics in Cyberspace, was recently published at Oxford University Press. Additionally, Erica has published articles in top-tier academic journals, including American Political Science Review, Security Studies, Journal of Strategic Studies, and Strategic Studies Quarterly. She has also written policy articles for a number of think tanks, as well as articles in venues such as Foreign Affairs, War on the Rocks, The Washington Post, The Wall Street Journal, Wired, and Lawfare.

Erica received her PhD in Political Science from Columbia University.


  • PhD in Political Science, Columbia University

In The Media

Meet the SIPA Community

The work of these faculty members embodies our shared commitments to advancing research and scholarship, promoting inclusive excellence, and working together in service to the public good.

May 22 2024
Technology & Innovation

Erica Lonergan wrote in last year’s DoD Strategy that “The inefficient division of labor between the Army, Navy, Air Force, and Marine Corps prevents the generation of a cyber force ready to carry out its mission.”

Mar 27 2024
Via Satelitte
Technology & Innovation

Report of diverse cybersecurity experts draws on recent high-profile incidents.

Nov 20 2023
Technology & Innovation

Assistant Professor Erica Lonergan comments on the 2023 Cyber Strategy that was published by the Department of Defense earlier this month.

Sep 25 2023
War on the Rocks

SIPA welcomes some of the noteworthy additions for the coming school year.

Aug 07 2023