His interests include user identity, mobility and intrusion detection; having published 55 papers in international journals and conferences. He is a chartered engineer, a fellow of the BCS, and a UK representative in the IFIP working groups relating to the Human Aspects of Information Security & Assurance (co-vice chair and co-proposer). He has worked with a variety of organisations such as France-Telecom, Symantec, Department of Trade and Industry, EU and EduServ Foundation.