Stephen is an accomplished application developer, systems administrator, entrepreneur, and academic. Stephen is experienced with secure development practices, hardening configuration of servers, and reviewing processes and code to secure information. Prior to joining NTT Com Security, Stephen was a lead developer on a project that dealt with large amounts of personal health information. Stephen's secure development background gives him a strong sense of where to find application bugs, how to exploit them, and how to fix them in a cost-effective manner. Like the rest of the NTT Com Security ethical hacking team, Stephen is an active member of the security community and has identified vulnerabilities in Mozilla FireFox, and other products such as Adobe ColdFusion. He is an active developer of penetration testing tools and techniques including assisting with research and development on the clusterd application server attack toolkit. Stephen has also spoken at a large development conference to demonstrate advanced web application attacks.