Transforming raw material into a useful publication is a team effort. My colleagues at Sage Data Security generously and passionately shared their knowledge. Dr. Ron Gonzales of National University and Tatyana Zidarov of Kaplan University provided thoughtful feedback and recommendations. Senior Development Editor Chris Cleveland and Development Editor Jeff Riley expertly guided the process. The Fadiman family made available a wonderful workspace. The Captain, as always, waited patiently. To all, I am grateful.