An incident drill is a practice exercise that rehearses how a security team detects, contains, and recovers from an attack or system failure. It can be a tabletop discussion, a technical simulation, or a full operational test that follows a response plan from alert to recovery. The goal is to see whether people, tools, and procedures work together under pressure.
Incident drills matter because real attacks move fast and expose weak coordination. A drill can reveal missing alerts, unclear ownership, broken escalation paths, or recovery steps that are too slow to use in practice. Defenders use them to test log review, isolation of affected systems, password resets, backup restoration, and communications with management or legal teams. Attackers benefit when a team has never rehearsed, so regular drills reduce confusion and improve response speed. In mature security programs, incident drills are part of operational readiness, not just training.