Chris Mitchell was Head of the Department of Information Security from 2021 to 2023.  He received his BSc and PhD degrees in Mathematics from Westfield College, University of London in 1975 and 1979 respectively.  He was appointed as Professor of Computer Science at Royal Holloway in 1990, having previously worked at Racal Comsec, Salisbury, UK (1979-85) and Hewlett-Packard Laboratories, Bristol, UK (1985-90).  After joining Royal Holloway he co-founded the Information Security Group in 1990, and helped launch the MSc in Information Security in 1992.  His research interests lie within information security, focusing on applications of cryptography.  He is co-editor-in-chief of Designs, Codes and Cryptography, and until 2021 was section editor for Section D of The Computer Journal.

Further details of his research, including a complete list of publications, can be found on his personal webpage:  http://www.chrismitchell.net

His DBLP page is here, and his Google Scholar profile is here.