The business application owner is accountable for business impact and must approve any change that affects application availability. ISACA's CRISC emphasis on ownership roles indicates business owners should approve changes with risk implications.

An IT risk register is a document that records and tracks the identified IT risks, their likelihood, impact, and mitigation strategies. It is a living document that needs to be updated regularly to reflect the current risk profile of the organization. One of the situations that would require updates to the IT risk register is the discovery of an ineffectively designed key IT control, as this would increase the likelihood or impact of the related IT risk. Management review of key risk indicators (KRIs), changes to the team responsible for maintaining the register, and completion of the latest internal audit are not reasons to update the IT risk register, as they do not affect the identified IT risks or their mitigation strategies. References = [CRISC Review Manual (Digital Version)], page 97; CRISC: Certified in Risk & Information Systems Control Sample Questions, question 198.

Assessing the risk of using production data for testing before making a decision is the best recommendation for the risk practitioner, because it helps to balance the benefits and drawbacks of using real data for the proof of concept (POC) of a security tool. A POC is a demonstration or trial of a proposed solution or product to verify its feasibility, functionality, and value. A security tool is a software or hardware device that helps to protect the IT systems or networks from threats or attacks. Using production data for testing purposes can yield the best results, as it reflects the actual data that the security tool will handle in the operational environment. However, using production data for testing also poses risks, such as data leakage, data corruption, data privacy violation, or regulatory non-compliance. Therefore, assessing the risk of using production data for testing before making a decision is the best recommendation, as it helps to identify and evaluate the potential risks and issues, and to determine the appropriate controls or mitigating factors to reduce or eliminate them. Accepting the risk of using the production data, benchmarking against what peer organizations are doing, and denying the request are all possible recommendations, but they are not the best recommendation, as they do not consider the risk assessment process and the trade-offs involved in using production data for testing. References = Risk and Information Systems Control Study Manual, Chapter 5, Section 5.4.1, page 208

Information security metrics are quantitative or qualitative measures that indicate the performance and effectiveness of the information security processes, controls, and objectives. The primary goal of developing information security metrics is to enable continuous improvement of the information security program and to align it with the business goals and strategy. Information security metrics can help to identify the strengths and weaknesses of the security program, to monitor and report on the progress and outcomes of the security initiatives, to evaluate the return on investment and value of the security activities, and to provide feedback and guidance for improvement actions. Information security metrics should be relevant, reliable, consistent, and actionable. References = Risk and Information Systems Control Study Manual, Chapter 3, Section 3.3.2, p. 116-117

Continuous data backup controls are the best recommendation to further reduce the impact of ransomware attacks, as they enable the organization to restore the data that has been encrypted or deleted by the ransomware without paying the ransom or losing the data. Continuous data backup controls ensure that the data is regularly and automatically backed up to a secure and separate location, and that the backup data is tested and verified for integrity and availability. Two-factor authentication, encryption for data at rest, and encryption for data in motion are not the best recommendations to further reduce the impact of ransomware attacks, as they do not address the recovery of the data that has been compromised by the ransomware. These controls may help to prevent or mitigate ransomware attacks, butnot to reduce their impact. References = CRISC by Isaca Actual Free Exam Q&As, question 207; CRISC: Certified in Risk & Information Systems Control Sample Questions, question 207.