Cybersecurity refers to the set of technologies, practices, and strategies designed to protect computer systems, networks, devices, and data from unauthorized access, theft, damage, disruption, or misuse. It involves identifying and assessing potential threats and vulnerabilities, and implementing controls and countermeasures to prevent or mitigate them. Some major risks of a successful cyberattack include: data breaches, ransomware attacks, disruption of services, damage to infrastructure, espionage and sabotage. Cybersecurity Risk Management: Enhancing Leadership and Expertise explores this highly dynamic field that is situated in a fascinating juxtaposition with an extremely advanced and capable set of cyber threat adversaries, rapidly evolving technologies, global digitalization, complex international rules and regulations, geo-politics, and even warfare. A successful cyber-attack can have significant consequences for individuals, organizations, and society as a whole. With comprehensive chapters in the first part of the book covering fundamental concepts and approaches, and those in the second illustrating applications of these fundamental principles, Cybersecurity Risk Management: Enhancing Leadership and Expertise makes an important contribution to the literature in the field by proposing an appropriate basis for managing cybersecurity risk to overcome practical challenges.