A requirements review is a formal reassessment of security rules, policy obligations, or technical controls before they are enforced, changed, or resumed. It is used to confirm what the rules should say, whether they still match current risks, and whether teams can actually implement them. In cybersecurity, this process helps prevent outdated or unclear requirements from becoming weak points in governance and operations.
Requirements reviews matter because security programs depend on accurate, actionable rules. If a policy pause, standard update, or new regulatory interpretation changes the plan, defenders use the review to check control scope, ownership, evidence, and deadlines. In real defenses, this can mean revising access rules, logging requirements, or configuration baselines. Attackers benefit when organizations skip this step, because confusion and delay can leave gaps between what is required on paper and what is enforced in practice.