The most effective way tominimize the impact of a control failureis to employDefense in Depth, which involves:
* Layered Security Controls:Implementing multiple, overlapping security measures to protect assets.
* Redundancy:If one control fails (e.g., a firewall), others (like IDS, endpoint protection, and network monitoring) continue to provide protection.
* Minimizing Single Points of Failure:By diversifying security measures, no single failure will compromise the entire system.
* Adaptive Security Posture:Layered defenses allow quick adjustments and contain threats.
Other options analysis:
* A. Business continuity plan (BCP):Focuses on maintaining operations after an incident, not directly on minimizing control failures.
* B. Business impact analysis (BIA):Identifies potential impacts but does not reduce failure impact directly.
* D. Information security policy:Guides security practices but does not provide practical mitigation during a failure.
CCOA Official Review Manual, 1st Edition References:
* Chapter 7: Defense in Depth Strategies:Emphasizes the importance of layering controls to reduce failure impacts.
* Chapter 9: Incident Response and Mitigation:Explains how defense in depth supports resilience.