“Principles of Incident Response & Disaster Recovery” by Michael Whitman is a revised edition textbook focusing on incident response and disaster recovery strategies for computer networks and business operations. The book offers comprehensive coverage of information security and IT contingency planning, providing insights into management practices and policy requirements. It includes the latest NIST knowledge, expanded coverage of security information and event management (SIEM) and unified threat management, as well as explanations of cloud-based systems and web-accessible tools. With a focus on minimizing downtime in emergencies and curbing losses during system service interruptions, this textbook is intended for college audiences interested in security and business continuity.529