| 19 September 2009 | Keynote: Usability Challenges in the
Security Domain: Is Security a Special Case? 3rd India International HCI Conference, Bangalore, India |
| 15 September 2009 | Invited Talk: Technology Trends for the
Future, and Their Implications for Governance and Privacy Second International Symposium on Global Information Governance , Prague, Czech Republic |
| 16 June 2009 | ISSNet NSERC Strategic Network Grant on CyberSecurity, Carleton University, Canada |
| 11 June 2009 | CA Council for Technical Excellence, Los Angeles, USA |
| 22 April 2009 | CA Architect's Conference, Islandia, NY, USA |
| 18 February 2009 | Digital Security Lab, Carleton University, Canada |
| 12 February 2009 | Software Security Lab, University of California Irvine, USA |
| 20 January 2009 | Security Research Group, University of California Davis, USA |
| 20 July 2008 | Workshop on Countering Insider Threats, Schloss Dagstuhl, Germany |
| 12 March 2008 | Information Security Group, Istituto di Informatica e Telematica (IIT), National Research Council (C.N.R.), Pisa, Italy |
| 5 March 2008 | Pacific Northwest National Laboratory, Richland, USA |
| 22 February 2008 | Department of Electrical Engineering and Computer Science, United States Military Academy, West Point, USA |
| 13 February 2008 | Security Research Group, Columbia University, USA |
| 25 April 2007 | Information Systems and Internet Security Laboratory, Polytechnic University, USA. |
| 27 November 2006 | CMU Usable Privacy and Security Laboratory, Carnegie Mellon University, USA. |
| 9 May 2006 | MITACS Digital Security Seminar Series, Carleton University, Canada. |
| 23 March 2006 | IBM Centers for Advanced Studies, Toronto, Canada. |
| 28 October 2005 | Information Networking Institute, Carnegie Mellon University, USA. |
| 27 January 2005 | DETER Project Meeting, UC Berkeley, USA. |
| 19 August 2004 | Department of Computer Science, University of South Carolina, USA. |
| 23-24 March 2004 | CERIAS Security Symposium, Purdue University, USA. |
| 12 November 2003 | Security Seminar, The Center for Education and Research in Information Assurance and Security (CERIAS), Purdue University, USA. |
| 21 July 2003 | Data Privacy Lab, Carnegie Mellon University, USA. |
| 10 July 2001 | IBM Canada Centre for Advanced Studies, Canada. |