John Haller is an SEI alumni employee.

John Haller is a member of the technical staff on the Cybersecurity Assurance team within the CERT® Division at the Software Engineering Institute (SEI), a unit of Carnegie Mellon University in Pittsburgh, PA. As a member of this team, Haller performs research on critical infrastructure protection, focusing on methods, tools, and techniques for managing external dependency and third-party risk. Prior to joining CERT in 2010, Haller was analyzing cybercrime attacks on the financial industry in collaboration with a U.S. law enforcement agency. Haller, a U.S. Army veteran, received his Juris Doctor (cum laude) and Master in Public and International Affairs from the University of Pittsburgh and is also a Certified Information Systems Security Professional (CISSP).