Mark Collier Mark Collier is the Chief Technology Officer at SecureLogix corporation, where he directs the companies Voice Over IP (VoIP) security research and development. Mark also defines and conducts VoIP security assessments for SecureLogix’s enterprise ustomers. Mark is actively performing research for the US Department of Defense, with a focus on developing SIP vulnerability assessment tools. Prior to SecureLogix, Mark was with Southwest Research Institute (SwRI), where he directed a group performing research and development in the areas of computer security and information warfare. Mark is a frequent speaker at major voice and security conferences. Mark has authored numerous articles and papers on VoIP security. Mark is also a founding member of the Voice Over IP Security Alliance (VoIPSA). Mark is a Magna Cum Laude graduate from St. Mary’s University, where he earned a Bachelors degree in Computer Science. Read More Read Less