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Daniel Cassman

Law. Security. Technology. Policy.

About Me

I’m a national security attorney based in San Francisco. I’ve worked for the National Park Service in Yosemite, Earthjustice in Alaska, and a law firm in New York. I created an interactive system that diagrams relationships among terrorist organizations. In my spare time, I enjoy hiking, sports, photography, travel, and tinkering with computers.


United States Department of Justice |Washington, D.C. & San Francisco, California

Attorney Advisor |2017 - Present

Represented the United States before the Foreign Intelligence Surveillance Court. Conducted oversight of the United States Intelligence Community. Co-led a team of forty attorneys responsible for oversight of a major intelligence collection program. Overhauled and modernized oversight of that program, including developing custom software to improve efficiency and quality of oversight.
Assistant Attorney General Award for Outstanding New Initiative (2019)

United States Court of Appeals for the Eleventh Circuit |Macon, Georgia

Law Clerk to the Honorable R. Lanier Anderson | 2015 - 2016

United States District Court for the Northern District of California |San Francisco, California

Law Clerk to the Honorable Samuel Conti |2014 - 2015

Center for International Security and Cooperation |Stanford, CA

Web Developer, Research Assistant, and Teaching Assistant |2013 - 2014

Analyzed interactions among terrorist organizations in Iraq. Created and maintained interactive software showing relationships among terrorist organizations in several regions worldwide. Advised undergraduate honors students on writing theses related to international security.


Stanford Law School |Stanford, California

Juris Doctor |2013


  • First Place, Steven M. Block Civil Liberties Award
  • Goldsmith Writing Prize in Conflict Resolution
  • Moot Court: Best Oral Argument, Quarterfinalist


  • Stanford Law Review Executive Board (Senior Online Editor)
  • Timor-Leste Legal Education Project
  • International Human Rights Clinic

Stanford University | Stanford, California

Bachelor of Arts | 2010

Political Science, Computer Science Minor


  • Honors in International Security Studies
  • Distinction (top 15% of class)

Publications & Writing

Keep It Secret, Keep It Safe: An Empirical Analysis of the State Secrets Doctrine

67 Stanford Law Review 1173 | 2015

Persistence and Recurrence of Internal Armed Conflict

Stanford Center for International Security and Cooperation | 2010

Nuclear Challenge from Pakistan and Iran — Part I (with Matthew Rojansky)

YaleGlobal Online | 2009