🚀 Introducing the CloudSEK MCP Server! Read more Red teaming is a form of ethical hacking in which security professionals emulate the tactics, techniques, and procedures (TTPs) of real attackers to test an organization's defenses. The exercise is authorized, scoped, and nondestructive: red teamers carry written permission and avoid real harm to systems or users. Attack speed makes that test urgent: IBM's X-Force Threat Intelligence Index found the time to execute a ransomware attack fell 94%, from 68 days in 2019 to under four days in 2023. Red teaming measures detection and response across people, processes, and technology, rather than the presence of vulnerabilities alone. This guide explains what red teaming is, how an engagement works, the types and tools involved, how red teams differ from blue and purple teams and from penetration testing, the frameworks behind the work, and the rise of AI red teaming. A red team engagement runs through six phases, from scoping to the final readout. The red team and the organization agree on objectives, targets, and rules of engagement. This phase sets what is in scope, what is off-limits, and the goal the team works toward, such as access to a specific system or dataset. The team gathers open-source intelligence and probes the attack surface to map people, technology, and exposed assets. Reconnaissance shapes the attack plan and identifies the likeliest entry points. The team gains a foothold through a phishing lure, an exposed credential, or an exploitable vulnerability. Initial access turns external reconnaissance into a position inside the environment. From the first foothold, the team moves between systems and escalates privileges toward higher-value targets. This phase mirrors how a real intruder expands access after breaching the perimeter. The team reaches the agreed goal, such as a sensitive dataset, a critical system, or domain-admin control.