A risk practitioner's best course of action when a business manager wants to leverage an existing approved vendor solution from another area within the organization is to assess the risk associated with the new use case. This is because the new use case may introduce different or additional risks that were not considered or addressed in the original approval. For example, the new use case may involve different data types, volumes, or sensitivities; different business processes, functions, or objectives; different regulatory or contractual requirements; or different technical or operational dependencies. Therefore, the risk practitioner should perform a vendor risk assessment (VRA) to identify, evaluate, and mitigate the potential risks of the new use case and ensure that the vendor solution meets the organization's riskappetite and tolerance12.
Recommending allowing the new usage based on prior approval is not the best course of action, as it may overlook or underestimate the risks of the new use case and expose the organization to unacceptable levels of risk. Requesting a new third-party review is not the best course of action, as it may be unnecessary or redundant if the vendor solution has already been reviewed and approved for another use case within the organization. Requesting revalidation of the original use case is not the best course of action, as it may not address the specific risks of the new use case and may also delay or disrupt the existing use case. References = Risk and Information Systems Control Study Manual, Chapter 4: Risk and Control Monitoring and Reporting, Section 4.2: Risk Monitoring, pp. 189-191.