Principal, Denim Group, Ltd.John Dickson is a security professional, entrepreneur and Principal at Denim Group, Ltd. He has nearly 20 years’ experience in network and application security and currently helps Chief Security Officers (CSO’s) launch and expand their critical application security initiatives. A former Air Force officer, Dickson served in the Air Force Information Warfare Center (AFIWC) and Air Force CERT. Since his transition to the commercial arena, he has played significant client-facing roles with companies such as Trident Data Systems, KPMG and SecureLogix Corporation. He currently writes a monthly column in Dark Reading, a Distinguished Fellow of ISSA, he has been a CISSP since 1998.