Costigan, Sean, and Greg Gleason. "What If Blockchain Cannot Be Blocked? Cryptocurrency and International Security." Information & Security: An International Journal 43, no. 1 (2019): 13-20.

Costigan, Sean, and Todor Tagarev. "Good Practices and Challenges in Organizing for Cybersecurity." Information & Security: An International Journal 32, no. 1 (2015): 5-8.

Costigan, Sean, Ernst Felberbauer, and Peter Foot. "The Challenges of Being Ten: Reflections on the Uniqueness  of the PfP Consortium." Connections: The Quarterly Journal 7, no. 3 (2008): 52-60.

Foot, Peter, and Sean Costigan. "Editors? Foreword." Connections: The Quarterly Journal 5, no. 2 (2006): 1-2.

Costigan, Sean. "Introduction." Connections: The Quarterly Journal  2, no. 3 (2003): 1-3.