This document is a guide that outlines the concept of red teaming in cybersecurity, which involves external entities testing an organization's security measures by simulating real-world attacks. It explains the differences between red teaming and penetration testing, noting that red teaming is a more comprehensive approach that assesses an organization's ability to detect, respond to, and recover from advanced threats. The guide details the phases of a red team engagement, including scoping, intelligence gathering, reconnaissance, initial access, exploitation, lateral movement, and response evaluation. It also discusses the benefits of red teaming, such as enhancing security posture, improving detection and response capabilities, and aligning with regulatory requirements like the Digital Operational Resilience Act (DORA). The document emphasizes the importance of tailored insights and operational resilience in the face of evolving cyber threats, providing a structured approach to strengthen organizational defenses.