As organizations increasingly depend on electronic information, the lack of systematic training on effective operations and security principles is causing chaos. Stories of data loss, data corruption, fraud, interruptions of service, and poor system design continue to flood our news. This book reviews fundamental concepts and practical recommendations for operations and security managers and staff. The guidelines are based on the author’s 40 years of experience in these areas. The text is written in simple English with references for all factual assertions so that readers can explore topics in greater detail.