An internal control audit has revealed a control deficiency related to a legacy system where the compensating controls no longer appear to be effective.
Which of the following would BEST help the information security manager determine the security requirements to resolve the control deficiency?
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A. B. C. D.B.
The best way to determine the security requirements to resolve a control deficiency related to a legacy system where compensating controls are no longer effective is through a risk assessment.
A risk assessment is a process of identifying, analyzing, and evaluating potential risks or threats to an organization's information assets, and determining the likelihood of those risks occurring and their potential impact on the organization. It is a systematic approach that helps organizations understand their risk posture and make informed decisions about how to mitigate those risks.
In this scenario, a risk assessment would help the information security manager identify the potential risks or threats associated with the control deficiency related to the legacy system. The assessment would also help the manager determine the likelihood of those risks occurring and their potential impact on the organization.
Once the risks have been identified and assessed, the manager can then determine the appropriate security requirements to mitigate those risks. This may involve implementing new controls, updating existing controls, or retiring the legacy system altogether.
While cost-benefit analysis, gap analysis, and business case development are all important tools for decision-making, they are not as well-suited to addressing the specific security requirements related to a control deficiency in a legacy system. A cost-benefit analysis, for example, would focus more on the financial costs and benefits associated with various security solutions, rather than on the specific security requirements themselves. A gap analysis would focus on identifying the gap between current and desired performance, rather than on identifying specific security requirements. Finally, a business case would focus more on the business justification for investing in security solutions, rather than on the specific security requirements themselves.
Therefore, the best approach in this scenario would be to conduct a risk assessment to identify and evaluate the risks associated with the control deficiency and determine the appropriate security requirements to mitigate those risks.