Isaca Updated CISM Exam Questions and Answers by leena

 The most important factor to ensuring information stored by an organization is protected appropriately is assigning information asset ownership. Information asset ownership is the process of identifying and assigning the roles and responsibilities of the individuals or groups who have the authority and accountability for the information assets and their protection. Information asset owners are responsible for defining the business value, classification, and security requirements of the information assets, as well as granting the access rights and privileges to the information users and custodians. Information asset owners are also responsible for monitoring and reviewing the security performance and compliance of the information assets, and reporting and resolving any security issues or incidents. By assigning information asset ownership, the organization can ensure that the information assets are properly identified, categorized, protected, and managed according to their importance, sensitivity, and regulatory obligations.

References = CISM Review Manual, 16th Edition, Chapter 1: Information Security Governance, Section: Data Classification, page 331; CISM Review Questions, Answers & Explanations Manual, 10th Edition, Question 62, page 572.

The best course of action for an information security manager when a threat intelligence report indicates a large number of ransomware attacks targeting the industry is to assess the risk to the organization. This means evaluating the likelihood and impact of a potential ransomware attack on the organization’s assets, operations, and reputation, based on the current threat landscape, the organization’s security posture, and the effectiveness of the existing security controls. A risk assessment can help the information security manager prioritize the most critical assets and processes, identify the gaps and weaknesses in the security architecture, and determine the appropriate risk response strategies, such as avoidance, mitigation, transfer, or acceptance. A risk assessment can also provide a business case for requesting additional resources or support from senior management to improve the organization’s security resilience and readiness. The other options are not the best course of action because they are either too reactive or too narrow in scope. Increasing the frequency of system backups (A) is a good practice to ensure data availability and recovery in case of a ransomware attack, but it does not address the prevention or detection of the attack, nor does it consider the potential data breach or extortion that may accompany the attack. Reviewing the mitigating security controls (B) is a part of the risk assessment process, but it is not sufficient by itself. The information security manager should also consider the threat sources, the vulnerabilities, the impact, and the risk appetite of the organization. Notifying staff members of the threat © is a useful awareness and education measure, but it should be done after the risk assessment and in conjunction with other security policies and procedures. Staff members should be informed of the potential risks, the indicators of compromise, the reporting mechanisms, and the best practices to avoid or respond to a ransomware attack. References = CISM Review Manual 2022, pages 77-78, 81-82, 316; CISM Item Development Guide 2022, page 9; #StopRansomware Guide | CISA; [The Human Consequences of Ransomware Attacks - ISACA]; [Ransomware Response, Safeguards and Countermeasures - ISACA]

Management decisions concerning information security investments will be most effective when they are based on the reporting of consistent and periodic assessments of risks. This will help management to understand the current and emerging threats, vulnerabilities, and impacts that affect the organization’s information assets and business processes. It will also help management to prioritize the allocation of resources and funding for the most critical and cost-effective security controls and solutions. The reporting of consistent and periodic assessments of risks will also enable management to monitor the performance and effectiveness of the information security program, and to adjust the security strategy and objectives as needed. References = CISM Review Manual 15th Edition, page 28.

= A post-incident review is a process of analyzing and learning from a security incident, such as a data breach, to improve the security posture and resilience of an organization. A post-incident review should include the following elements12:

A clear and accurate description of the incident, including its scope, impact, timeline, root cause, and contributing factors.

A detailed assessment of the effectiveness and efficiency of the incident response process, including the roles and responsibilities, communication channels, coordination mechanisms, escalation procedures, tools and resources, documentation, and reporting.

An evaluation of the adequacy of existing controls, such as policies, standards, procedures, technical measures, awareness, and training, to prevent, detect, and mitigate similar incidents in the future.

A list of actionable recommendations and improvement plans, based on the lessons learned and best practices, to address the identified gaps and weaknesses in the security strategy, governance, risk management, and incident management.

A follow-up and monitoring mechanism to ensure the implementation and verification of the recommendations and improvement plans.

The most important element to include in a post-incident review following a data breach is the evaluation of the adequacy of existing controls, because it directly relates to the security objectives and requirements of the organization, and provides the basis for enhancing the security posture and resilience of the organization. Evaluating the existing controls helps to identify the vulnerabilities and risks that led to the data breach, and to determine the appropriate corrective and preventive actions to reduce the likelihood and impact of similar incidents in the future. Evaluating the existing controls also helps to align the security strategy and governance with the business goals and objectives, and to ensure the compliance with legal, regulatory, and contractual obligations.

The other elements, such as an evaluation of the effectiveness of the information security strategy, documentation of regulatory reporting requirements, and a review of the forensics chain of custody, are also important, but not as important as the evaluation of the existing controls. An evaluation of the effectiveness of the information security strategy is a broader and more strategic activity that may not be directly relevant to the specific incident, and may require more time and resources to conduct. Documentation of regulatory reporting requirements is a necessary and mandatory task, but it does not provide much insight or value for improving the security posture and resilience of the organization. A review of the forensics chain of custody is a technical and procedural activity that ensures the integrity and admissibility of the digital evidence collected during the incident investigation, but it does not address the root cause or the mitigation of the incident. References = 1: CISM Exam Content Outline | CISM Certification | ISACA 2: CISM Review Manual 15th Edition, page 147