Imagine quantifying and visualizing your organization's cyber resilience as precisely as a stock market index. This book introduces that reality through the innovative Cyber Resilience Index, a unified metric that helps master threat-informed defense, transform cybersecurity strategy, and achieve efficient and effective threat management and communication. Through an engaging dialogue between a seasoned CISO Sophia and an innovative security leader Alex, you are taken on a journey from traditional, reactive defense to a proactive, resilience-focused strategy. The book masterfully blends technical depth with strategic insights, explaining the paradigm shift from asset-driven to threat-intelligence-driven security. You will learn how and why compliance is very important, but not enough to be truly cyber resilient; how to construct and leverage interoperable cyber value chains; how to go beyond continuous threat exposure management programs and truly master the threat-informed defense concepts; how to articulate value, and manage your cyber defense through a unified metric (much like traders use stock market charts to make successful trading decisions); and, lastly, what the evolution of cybersecurity leadership looks like ahead. Whether you're a cybersecurity professional, a subject matter expert (SME), a business leader, a security leader, or an expert in the field looking for battle-tested ways to sharpen or develop your leadership skills, this book provides a new lens through which to view the future of cybersecurity and leadership. Are you ready to reshape the chessboard of cyber defense?   What You Will Learn - Quantify and visualize your organization's cyber resilience using a unified metric - Transition from reactive defense to proactive, threat-informed strategy - Build and optimize interoperable cyber value chains - Articulate cybersecurity value to boards and executives - Evolve beyond compliance-driven security to true cyber resilience - Make data-driven cybersecurity decisions using the Cyber Resilience Index - Anticipate and counter emerging cyber threats - Transform your security operations into a well-oiled, efficient machine - Engage in hands-on experience through practical exercises at the end of each chapter, laying groundwork for mastering threat-informed defense - Develop essential soft skills for cybersecurity leaders, illustrated through philosophical quotes and real-world experiences - Communicate strategies crucial for successful cybersecurity transformation - Obtain leadership skills necessary to drive change in complex organizational environments - Gain career development insights for SMEs aspiring to become the next generation of cybersecurity leaders - Measure and manage defenses more efficiently than traditional risk management, and outdated risk matrices and risk registers - Balance technical expertise with a strategic business mindset in cybersecurity leadership - Strategize for what lies ahead in the development of the cyber resilience index, namely, integrating AI and machine learning towards the formation of an AI-driven cyber value chain