A risk register is a document that records and tracks the identified risks, their causes, impacts, likelihood, responses, and status. A risk register can help manage and communicate risks throughout the risk management process. A risk register should be updated regularly to reflect the current state of risks and their responses. Due to a change in business processes, an identified risk scenario may no longer require mitigation, as the risk level may have decreased or the risk may have been eliminated. However, the risk should remain in the risk register, as the most important reason is to monitor for potential changes to the risk scenario. This means keeping track of the internal and external factors that may affect the risk scenario, such as new threats, vulnerabilities, opportunities, or controls. Monitoring for potential changes to the risk scenario can help identify and respond to any emerging or reoccurring risks, and ensure that therisk register is accurate and complete. References = Risk and Information Systems Control Study Manual, Chapter 1: IT Risk Identification, Section 1.3: Risk Register, p. 41-43.