Anderson, R. (no date) Security Engineering: A Guide to Building Dependable Distributed Systems. 3rd ed.
Gollmann, D. (2011) Computer security. 3rd ed. Chichester, West Sussex: Wiley. Available at: http://UCL.eblib.com/patron/FullRecord.aspx?p=819182.
Security Engineering: A Guide to Building Dependable Distributed Systems (no date). Available at: http://www.cl.cam.ac.uk/~rja14/book.html.