Section: Volume D

When developing a response plan to address security incidents regarding sensitive data loss, it is most important to review the data classification policy. A data classification policy is a document that defines the categories and levels of data based on their sensitivity, value, and criticality, and specifies the appropriate security measures and handling procedures for each data type. A data classification policy helps to identify and protect the sensitive data that could be exposed or compromised in a security incident, and to comply with the relevant laws, regulations, standards, and contracts. Reviewing the data classification policy is important when developing a response plan, because it helps to determine the scope, impact, and priority of the security incident, and to select the most appropriate and effective response actions and strategies. Reviewing the data classification policy also helps to communicate and coordinate the response plan with the internal and external stakeholders, such as the data owners, users, custodians, and regulators, and to report and disclose the security incident as required. The other options are not as important as reviewing the data classification policy, although they may be part of or derived from the response plan. Revalidating current key risk indicators (KRIs), revising risk management procedures, and revalidating existing risk scenarios are all activities that can help to improve or update the risk management process, but they are not the most important when developing a response plan. References = Risk and Information Systems Control Study Manual, Chapter 5, Section 5.3.1, page 5-25.

The primary basis for prioritizing risk responses is the impact of the risk. The impact of the risk is the consequence or effect of the risk on the organization's objectives or operations, such as financial loss, reputational damage, operational disruption, or legal liability. The impact of the risk is one of the key dimensions of risk analysis, along with the likelihood of the risk. The impact of the risk helps to determine the severity and priority of the risk, and to select the most appropriate and effective risk response. The impact of the risk also helps to evaluate the cost-benefit and trade-off of the risk response, and to measure the residual risk and the risk performance. The other options are not the primary basis for prioritizing risk responses, although they may be considered or influenced by the impact of the risk. The replacement cost of the business asset, the cost of risk mitigation controls, and the classification of the business asset are all factors that could affect the value or importance of the business asset, but they do not necessarily reflect the impact of the risk on the business asset or the organization. References = Risk and Information Systems Control Study Manual, Chapter 4, Section 4.3.1, page 4-25.

The effectiveness of an IT risk management function depends on how well it can identify, analyze, evaluate, and treat the IT-related risks that may affect the organization's objectives and performance. To achieve this, the IT risk management function needs to have processes that are updated and monitored on a continuous basis, so that they can capture the changes in the IT environment, the business context, the risk appetite and tolerance, and the regulatory requirements. Updating and monitoring the IT risk management processes also helps to ensure that they are consistent, reliable, and efficient, and that they provide timely and accurate information for decision making and reporting12. Aligning the IT risk management processes to an industry-accepted framework is important, but not the most important factor for the effectiveness of the function. A framework provides a common language, structure, and methodology for IT risk management, but it does not guarantee that the processes are updated and monitored on a continuous basis. A framework also needs to be customized and adapted to the specific needs and context of the organization3. Reviewing and approving the IT risk management processes by senior management is important, but not the most important factor for the effectiveness of the function. Senior management support and endorsement are essential for establishing the tone and culture of IT risk management, as well as for allocating the necessary resources and authority for the function. However, senior management review and approval alone do not ensure that the processes are updated and monitored on a continuous basis. Senior management also need to oversee and evaluate the performance and outcomes of the IT risk management function4. Periodically assessing the IT risk management processes against regulatory requirements is important, but not the most important factor for the effectiveness of the function. Regulatory compliance is one of the objectives and drivers of IT risk management, and it requires the function to adhere to the applicable laws, rules, and standards. However, regulatory requirements are not the only source of IT risk, and they may not cover all the aspects and dimensions of IT risk management. Moreover, periodic assessment may not be sufficient to capture the dynamic and evolving nature of IT risk. Therefore, the IT risk management processes need to be updated and monitored on a continuous basis, not only to meet the regulatory requirements, but also to address the other sources and impacts of IT risk5. References = Risk and Information Systems Control Study Manual, Chapter
3: IT Risk Response, Section 3.1: Risk Response Process, pp. 121-123.