Organizations are increasingly vulnerable as attack surfaces grow and cyber threats evolve. Addressing these threats is vital, making attack surface management (ASM) essential for security leaders globally. This practical book provides a comprehensive guide to help you master ASM. Authors Ron Eddings and MJ Kaufmann offer actionable solutions for newcomers and experts alike, using machine learning and AI techniques. ASM helps you routinely assess digital assets to gain complete insight into vulnerabilities, and potential threats. The process covers all security aspects, from daily operations and threat hunting to vulnerability management and governance. You'll learn fundamental ASM concepts, including their role in cybersecurity; how to assess and map your organization's attack surface, including digital assets and vulnerabilities; strategies for identifying, classifying, and prioritizing critical assets; attack surfaces types, including each one's unique security challenges; how to align technical vulnerabilities with business risks; principles of continuous monitoring and management to maintain a robust security posture; techniques for automating asset discovery, tracking, and categorization; remediation strategies for addressing vulnerabilities, including patching, monitoring, isolation, and containment; and more.