This white paper outlines the Incident Handlers Handbook authored by Patrick Kral, focusing on the essential phases of incident handling in IT security. The document emphasizes the importance of preparation, communication, and documentation in responding to security incidents. It describes the six phases of the incident handling process, which include preparation, identification, containment, eradication, recovery, and lessons learned. Each phase is detailed to provide IT professionals with a foundational understanding necessary to create their own incident response policies and teams. The paper also highlights the significance of having a Computer Incident Response Team (CIRT) that is well-prepared to handle various incidents, ranging from minor technical failures to serious security breaches. Additionally, it includes practical recommendations for tools and training essential for effective incident management. The overall goal is to equip organizations with the knowledge to effectively respond to security incidents and mitigate potential risks.