The best course of action when a risk practitioner finds that the risk level of an emerging IT risk has increased, despite having an action plan to mitigate it, is to evaluate whether the selected controls are still appropriate. This is because the increase in the risk level may indicate that the current controls are not effective or sufficient to reduce the impact or likelihood of the risk, or that the risk environment has changed and new threats or vulnerabilities have emerged. By evaluating the appropriateness of the selected controls, the risk practitioner can identify the gaps or weaknesses in the control design or implementation, and determine the need for corrective actions or improvements. The other options are not the best course of action, because they do not address the root cause of the problem, but rather assume or ignore the effectiveness of the controls, as explained below:
A. Implement the planned controls and accept the remaining risk is not the best course of action, because it assumes that the planned controls are adequate and aligned with the organization’s risk appetite, which may not be the case if the risk level has increased. Implementing the planned controls without evaluating their appropriateness may result in wasting resources, exposing the organization to more risk, or missing opportunities to enhance the risk mitigation effectiveness.
B. Suspend the current action plan in order to reassess the risk is not the best course of action, because it ignores the effectiveness of the current controls, which may still provide some level of risk mitigation, even if they are not optimal. Suspending the current action plan may also delay the risk response and increase the risk exposure, especially if the risk is time-sensitive or dynamic. Reassessing the risk without evaluating the appropriateness of the current controls may also lead to inaccurate or incomplete risk information and analysis.
C. Revise the action plan to include additional mitigating controls is not the best course of action, because it assumes that the current controls are ineffective or insufficient, which may not be the case if the risk level has increased due to other factors, such as changes in the risk environment or the organization’s objectives. Revising the action plan without evaluating the appropriateness of the current controls may result in overcompensating, duplicating, or conflicting the controls, which may affect the risk mitigation efficiency and performance. References = Risk and Information Systems Control Study Manual, Chapter 4, Section 4.3.3, page 130. How to Mitigate Emerging Technology Risk - ISACA, Risk Mitigation Strategies: Types & Examples (+ Free Template), 5 Key Risk Mitigation Strategies (With Examples) | Indeed.com