Isaca Updated CISM Exam Questions and Answers by jeremy

A key consideration in the use of quantitative risk analysis is that it assigns numeric values to exposures of information assets, such as the probability of occurrence, the frequency of occurrence, the impact of occurrence, and the monetary value of the assets. These numeric values help to measure and compare the risks in a more objective and consistent way, and to support the decision-making process based on cost-benefit analysis. Quantitative risk analysis also requires reliable and accurate data sources, and it may involve the use of statistical tools and techniques.

References = CISM Review Manual, 16th Edition eBook1, Chapter 2: Information Risk Management, Section: Risk Analysis, Subsection: Quantitative Risk Analysis, Page 84.

Cost-benefit analysis (CBA) is a method of comparing the costs and benefits of different alternatives for achieving a desired outcome. CBA can help information security managers to choose the best controls to mitigate risk to acceptable levels by providing a rational and objective basis for decision making. CBA can also help information security managers to justify their choices to senior management, stakeholders, and auditors by demonstrating the value and return on investment of the selected controls. CBA can also help information security managers to prioritize and allocate resources for implementing and maintaining the controls12.

CBA involves the following steps12:

Identify the objectives and scope of the analysis

Identify the alternatives and options for achieving the objectives

Identify and quantify the costs and benefits of each alternative

Compare the costs and benefits of each alternative using a common metric or criteria

Select the alternative that maximizes the net benefit or minimizes the net cost

Perform a sensitivity analysis to test the robustness and validity of the results

Document and communicate the results and recommendations

CBA is mainly driven by the information security manager’s decision, but it can also take into account other factors such as best practices, control frameworks, and regulatory requirements. However, these factors are not the primary drivers of CBA, as they may not always reflect the specific needs and context of the organization. Best practices are general guidelines or recommendations that may not suit every situation or environment. Control frameworks are standardized models or methodologies that may not cover all aspects or dimensions of information security. Regulatory requirements are mandatory rules or obligations that may not address all risks or threats faced by the organization. Therefore, CBA is the best method to choose the most appropriate and effective controls to mitigate risk to acceptable levels, as it considers the costs and benefits of each control in relation to the organization’s objectives, resources, and environment12. References = CISM Domain 2: Information Risk Management (IRM) [2022 update], Five Key Considerations When Developing Information Security Risk Treatment Plans

The information security manager should do FIRST invoke the organization’s incident response plan, which is a predefined set of procedures and guidelines for handling security incidents in a timely and effective manner. The incident response plan should include the roles and responsibilities of the incident response team, the communication protocols and channels, the escalation and reporting procedures, and the documentation and evidence collection requirements. By invoking the incident response plan, the information security manager can ensure that the incident is properly contained, analyzed, resolved, and reported, and that the appropriate stakeholders are informed and involved. The other options are not the first actions that the information security manager should take, as they are part of the communication process that follows the incident response plan. Setting up communication channels for the target audience, determining the needs and requirements of each audience, and creating a comprehensive singular communication are all important steps for communicating effectively with the board, regulatory agencies, and the media, but they are not the first priority in the event of a security incident. The information security manager should first follow the incident response plan to manage the incident and its impact, and then communicate the relevant information to the target audience according to the plan. References = CISM Review Manual, 16th Edition, page 2261; CISM Review Questions, Answers & Explanations Manual, 10th Edition, page 1012

Determining the needs and requirements of each audience should be the FIRST step in developing materials to update the board, regulatory agencies, and the media about a security incident. This is because different audiences have different expectations, interests, and concerns regarding the incident and its impact. By understanding the needs and requirements of each audience, the information security manager can tailor the communication materials to address them effectively and appropriately. This will also help to avoid confusion, misinformation, or misinterpretation of the incident details and response actions