Dr. Lawrie Brown is an honorary senior lecturer in the School of Engineering and Information Technology at UNSW Canberra at the Australian Defence Force Academy, following his retirement in 2016. His research interests include computer systems security, safe mobile code execution, communications, and cryptography. He has worked on the implementation and design of private key block ciphers, in particular, the LOKI family of encryption algorithms; and on the design of safe mobile code environments using the functional language Erlang.

He is the co-author of a textbook on Computer Security with well-known US IT textbook author William Stallings.