This book presents the practice of protecting systems, networks, and programs from digital attacks, aiming to ensure the confidentiality, integrity, and availability of a firm's networks, business systems, and data. Effective cybersecurity is not just about technological solutions but also requires robust governance measures. Drawing from academic research and the authors' professional experience in governance and cybersecurity management, this book centers on cybersecurity governance at the strategic policy-making level and its implementation throughout the organization. It emphasizes that optimizing all interdependent functions is crucial for a successful corporate strategy, adopting the concept that "the whole is greater than the sum of its parts" in cybersecurity governance. The book aims to develop a holistic organizational cybersecurity governance framework (CGF) embedded within the enterprise risk management (ERM) function of the organization. It explores the connections, interdependencies, and complementarities between broader corporate governance practices and cybersecurity management. Focusing on technology, finance, and human factors as key enablers, the book details how technological devices, technology management, financial disciplines, and human interactions reinforce organizational cybersecurity. It covers the use of technology for planning and implementing information security solutions, the role of financial management in enhancing cybersecurity, and the importance of human factors in the cybersecurity process. Educational features include imparting knowledge and managerial skills essential for designing, managing, and communicating an effective CGF. This book fills a gap in the literature by providing a comprehensive, strategic, and structured approach to cybersecurity governance, addressing the interdependencies and complementarities of organizational management functions for optimal information risk control.