Protection against data intrusion focuses on preventing unauthorized access to systems, applications, networks, and data. One of the most direct controls is limiting who can access the system through authentication, authorization, role-based access control, least privilege, and account management. Trending security breaches can support monitoring and improvement, but it is detective rather than preventive. Improving recovery time is related to resilience, continuity, or disaster recovery after disruption, not intrusion prevention. Switching to degraded mode may help maintain operation during certain failures, but it does not directly protect data from unauthorized access. Software quality engineering treats security as a quality attribute requiring requirements, design controls, testing, and operational procedures. Access limitation is the best protection-oriented answer.

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