Residual risk is the risk that remains after the implementation of controls. It is important for a risk practitioner to verify that the residual risk is within the acceptable levels defined by the enterprise's risk appetite and tolerance. This ensures that the controls are effective in reducing the risk exposure to an acceptable level and align with the enterprise's objectives and strategy. References = CRISC Review Manual 27th Edition, page
131. Most Asked CRISC Exam Questions and Answers.

The first thing that the risk practitioner should do upon learning that a new third-party system on the corporate network has introduced vulnerabilities that could compromise corporate IT systems is to notify information security management. This will help to escalate the issue to the appropriate authority and responsibility level, and to initiate the incident response process. Information security management can also coordinate with the third party, the IT department, and other stakeholders to assess the impact and severity of the vulnerabilities, and to implement the necessary actions to contain, eradicate, and recover from the incident. Confirming the vulnerabilities with the third party, identifying procedures to mitigate the vulnerabilities, and requesting IT to remove the system from the network are not the first things that the risk practitioner should do, as they may not address the urgency and priority of the issue, and may not involve the relevant decision makers and responders. References = Risk and Information Systems Control Study Manual, 7th Edition, Chapter 4, Section 4.2.1.2, page 1931
1: ISACA Certified in Risk and Information Systems Control (CRISC) Exam Guide, Answer to Question
659.

Conducting independent audits to verify that appropriate security controls are in place is the most effective way to mitigate the risk of data loss at a third-party provider. These audits provide assurance that the provider adheres to security best practices and complies with relevant standards and regulations. While contractual clauses and insurance can provide financial remedies post-incident, proactive verification of security controls helps prevent breaches from occurring in the first place.
Reference:ISACA CRISC Review Manual, 7th Edition, Chapter 3: Risk Response and Reporting, Section:
Third-Party Risk Management.

A risk factor is a condition or event that may increase the likelihood or impact of a risk, which is the effect of uncertainty on objectives1. An information systems review is a process that involves examining and evaluating the adequacy and effectiveness of the information systems and their related controls, policies, and procedures2. The purpose of an information systems review is to identify and report the risk factors that may affect the confidentiality, integrity, availability, and performance of the information systems and their outputs3. The best way to ensure that the risk factors identified during an information systems review are addressed is to assign action items and deadlines to specific individuals, who are responsible and accountable for implementing the appropriate risk responses. A risk response is an action taken or plannedto mitigate or eliminate the risk, such as avoiding, transferring, reducing, or accepting the risk4. By assigning action items and deadlines to specific individuals, the organization can ensure that the risk factors are properly and promptly addressed, and that the progress and results of the risk responses are monitored and reported5.
Informing business process owners of the risk, reviewing and updating the risk register, and implementing new control technologies are not the best ways to ensure that the risk factors identified during an information systems review are addressed, as they do not provide the same level of accountability and effectiveness as assigning action items anddeadlines to specific individuals. Informing business process owners of the risk is a process that involves communicating and sharing the risk information with the persons who have the authority and accountability for a business process that is supported or enabled by the information systems6. Informing business process owners of the risk can help to raise their awareness and understanding of the risk, but it does not ensure that they will take the necessary actions to address the risk. Reviewing and updating the risk register is a process that involves checking and verifying that the risk register, which is a document that records and tracks the risks and their related information, is current, complete, and consistent7. Reviewing and updating the risk register can help to reflect the changes and updates in the risk factors and their status, but it does not ensure that the risk factors are resolved or reduced. Implementing new control technologies is a process that involves introducing or applying new software or hardware that can help to prevent, detect, or correct the risk factors affecting the information systems8. Implementing new control technologies can help to improve the security and performance of the information systems, but it does not ensure that the risk factors are eliminated or mitigated. References = 1: Risk Factors - an overview | ScienceDirect Topics2: InformationSystems Audit and Control Association (ISACA) - ISACA3: Information Systems Audit: The Basics4: Risk Response Strategy and Contingency Plans - ProjectManagement.com5: Risk and Information Systems Control Study Manual, Chapter 3: Risk Response, Section 3.1: Risk Response Options, pp. 113-115.6: [Business Process Owner - Gartner IT Glossary] 7: Risk Register: A Project Manager's Guide with Examples [2023] * Asana8: Technology Control Automation: Improving Efficiency, Reducing ... - ISACA : [Business Process Owner - Roles and Responsibilities] : [Risk and Information Systems Control Study Manual, Chapter 2: IT Risk Assessment, Section 2.1: Risk Identification, pp. 57-59.] : [Risk and Information Systems Control Study Manual, Chapter 4: Risk and Control Monitoring and Reporting, Section
4.2: Risk Monitoring, pp. 189-191.]