Professor Warren has held the following positions:

• Professor of Cyber Security, RMIT University, Australia, 2020+;
• Director of the RMIT University, Cyber Security Research Centre, 2020+;
• Professor of Cyber Security, School of Information Technology, Deakin University, Australia, 2016 to 2020;
• Deputy Director of the Deakin University, Strategic Research Centre in Cyber Security, 2015 to 2020;
• Professor of Information Systems, Department of Information Systems, Deakin University, Australia, 2011 to 2016;
• Cyber Security Risk Consultant (Part Time), Security Infrastructure Solutions, Australia, 2011 to 2013;
• Head of School and Professor at the School of Information Systems, Deakin University, Australia, 2004 – 2011;
• Associate Head of School and Associate Professor at the School of Information Technology, Deakin University, Australia, 2002 – 2004;
• Senior Lecturer at the School of Information Technology, Deakin University, Australia, 2000 – 2002;
• Lecturer at the School of Information Technology, Deakin University, Australia, 1998 – 2000;
• Lecturer at the School of Marketing and Operational Science, Plymouth Business School, Plymouth University, United Kingdom, 1996 – 1998;
• Research Assistant with the Centre for Security, Communications and Network Research (formally the Network Research Group), Plymouth University, United Kingdom, 1993 – 1996.