Patrick Mullen has fourteen years of computer industry experience with the past twelve years focused on information and network security. He was an early major contributor for the snort open source intrusion detection system and has contributed to several other open source security projects. Patrick is currently Principal Research Engineer with the Sourcefire Vulnerability Team (VRT) In this role he is responsible for researching vulnerabilities and developing advanced detection algorithms for security issues. Patrick is also the team lead for c-based detection capabilities within Snort. Prior to joining Sourcefire, Patrick spent six years as a security consultant where he analyzed application, system, and network security, providing a holistic view into security requirements and recommendations for Fortune 500 enterprises.