This book provides a high-level discussion on the roles and responsibilities of a CISO or an equivalent authority in charge of protecting the confidentiality of information in a typical organization. Supplying the knowledge base and experience required for a CISO, the text includes several case studies based on real-world experiences. For an incumbent or an aspiring CISO, the book includes the necessary training material. Experienced CISOs can refer to this guide for best practices in the industry.