Question 64

Preventive security controls are most likely being used when segmenting a critical legacy server into a private network.

Segmentation of a critical legacy server into a private network is primarily intended to prevent unauthorized access and mitigate potential security risks. This action serves as a proactive measure to safeguard sensitive data and systems.

A) Deterrent

Deterrent controls aim to discourage potential attackers from attempting to exploit vulnerabilities. While segmentation may have a deterrent effect by making access more difficult, its primary function is not to deter but to prevent access altogether.

B) Corrective

Corrective controls are employed after an incident has occurred to restore systems to their normal state or mitigate damage. Segmenting a legacy server does not fall under this category, as it is a preemptive measure rather than a reactive one.

C) Compensating

Compensating controls are alternative measures put in place to satisfy a security requirement when the primary control cannot be implemented. Segmenting a legacy server into a private network does not serve as a substitute for other controls but as a primary measure to secure the server.

D) Preventive

Preventive controls are designed to stop security incidents before they occur. By segmenting the legacy server into a private network, access is restricted, thereby reducing the risk of unauthorized access and potential security breaches, which aligns perfectly with the definition of preventive controls.

Conclusion

The segmentation of a critical legacy server into a private network is a clear example of a preventive security control, aimed at proactively protecting the server from unauthorized access. Other options, such as deterrent, corrective, and compensating controls, do not align with the primary goal of proactively preventing security incidents, making option D the definitive correct choice.