Isaca Updated CISM Exam Questions and Answers by zephyr

= Initiating the organization’s incident response process is the best course of action for the information security manager when a cloud application used by the organization is found to have a serious vulnerability. The incident response process is a set of predefined steps and procedures that aim to contain, analyze, resolve, and learn from security incidents. The information security manager should follow the incident response process to ensure that the vulnerability is properly reported, assessed, mitigated, and communicated to the relevant stakeholders. The incident response process should also involve the cloud service provider (CSP) and the business owner of the application, as they are responsible for the security and functionality of the cloud application. Instructing the vendor to conduct penetration testing, suspending the connection to the application in the firewall, and reporting the situation to the business owner of the application are all possible actions that may be taken as part of the incident response process, but they are not the best initial course of action. Penetration testing may help to identify the root cause and the impact of the vulnerability, but it may also cause further damage or disruption to the cloud application. Suspending the connection to the application in the firewall may prevent unauthorized access or exploitation of the vulnerability, but it may also affect the availability and continuity of the cloud application. Reporting the situation to the business owner of the application is an important step to inform them of the risk and the potential business impact, but it is not sufficient to address the vulnerability and its consequences. Therefore, the information security manager should initiate the incident response process as the best course of action, and then perform the other actions as appropriate based on the incident response plan and the risk assessment. References = CISM Review Manual 2023, page 211 1; CISM Practice Quiz 2

 = Penetration testing is most appropriate when a new system is about to go live, because it is a method of evaluating the security of a system by simulating an attack from a malicious source. Penetration testing can help to identify and exploit vulnerabilities, assess the impact and risk of a breach, and provide recommendations for remediation and improvement. Penetration testing can also help to validate the effectiveness of the security controls and policies implemented for the new system, and ensure compliance with relevant standards and regulations. Penetration testing is usually performed after the system has undergone other types of testing, such as functional, performance, and usability testing, and before the system is deployed to the production environment. Penetration testing is not as appropriate when a new system is being designed, because the system is still in the early stages of development and may not have all the features and functionalities implemented. Penetration testing at this stage may not provide a realistic or comprehensive assessment of the system’s security, and may cause delays or disruptions in the development process. Penetration testing is also not as appropriate when a security policy is being developed, because the policy is a high-level document that defines the goals, objectives, and principles of information security for the organization. Penetration testing is a technical and operational activity that tests the implementation and enforcement of the policy, not the policy itself. Penetration testing is also not as appropriate when a security incident has occurred, because the incident may have already compromised the system and caused damage or loss. Penetration testing at this stage may not be able to prevent or mitigate the incident, and may interfere with the incident response and recovery efforts. Penetration testing after an incident may be useful for forensic analysis and lessons learned, but it is not the primary or immediate response to an incident. References = CISM Review Manual, 16th Edition, ISACA, 2021, pages 229-230, 233-234.

A red team exercise is a simulated cyber attack conducted by a group of ethical hackers or security experts (the red team) against an organization’s network, systems, and staff (the blue team) to test the organization’s ability to detect, respond, and recover from a real cyber attack. A red team exercise provides an information security manager with the most accurate indication of the organization’s ability to respond to a cyber attack, because it mimics the tactics, techniques, and procedures of real threat actors, and challenges the organization’s security posture, incident response plan, and security awareness in a realistic and adversarial scenario12. A red team exercise can measure the following aspects of the organization’s cyber attack response capability3:

The effectiveness and efficiency of the security controls and processes in preventing, detecting, and mitigating cyber attacks

The readiness and performance of the incident response team and other stakeholders in following the incident response plan and procedures

The communication and coordination among the internal and external parties involved in the incident response process

The resilience and recovery of the critical assets and functions affected by the cyber attack

The lessons learned and improvement opportunities identified from the cyber attack simulation

The other options, such as a walk-through of the incident response plan, a black box penetration test, or a simulated phishing exercise, are not as accurate as a red team exercise in indicating the organization’s ability to respond to a cyber attack, because they have the following limitations4 :

A walk-through of the incident response plan is a theoretical and hypothetical exercise that involves reviewing and discussing the incident response plan and procedures with the relevant stakeholders, without actually testing them in a live environment. A walk-through can help to familiarize the participants with the incident response roles and responsibilities, and to identify any gaps or inconsistencies in the plan, but it cannot measure the actual performance and effectiveness of the incident response process under a real cyber attack scenario.

A black box penetration test is a technical and targeted exercise that involves testing the security of a specific system or application, without any prior knowledge or access to its internal details or configuration. A black box penetration test can help to identify the vulnerabilities and weaknesses of the system or application, and to simulate the perspective and behavior of an external attacker, but it cannot test the security of the entire network or organization, or the response of the incident response team and other stakeholders to a cyber attack.

A simulated phishing exercise is a social engineering and awareness exercise that involves sending fake emails or messages to the organization’s staff, to test their ability to recognize and report phishing attempts. A simulated phishing exercise can help to measure the level of security awareness and training of the staff, and to simulate one of the most common cyber attack vectors, but it cannot test the security of the network or systems, or the response of the incident response team and other stakeholders to a cyber attack.

References = 1: What is a Red Team Exercise? | Redscan 2: Red Team vs Blue Team: How They Differ and Why You Need Both | CISA 3: Red Team Exercises: What They Are and How to Run Them | Rapid7 4: What is a Walkthrough Test? | Definition and Examples | ISACA : Penetration Testing Types: Black Box, White Box, and Gray Box | CISA

The best way to support the incident management process for attacks on an organization’s supply chain is to establish communication paths with vendors. This means that the organization and its vendors have clear and agreed-upon channels, methods, and protocols for exchanging information and coordinating actions in the event of an incident that affects the supply chain. Communication paths with vendors can help to identify the source, scope, and impact of the incident, as well as to share best practices, lessons learned, and recovery strategies. Communication paths with vendors can also facilitate the escalation and resolution of the incident, as well as the reporting and documentation of the incident. Communication paths with vendors are part of the incident response plan (IRP), which is a component of the information security program (ISP) 12345.

The other options are not the best ways to support the incident management process for attacks on the organization’s supply chain. Including service level agreements (SLAs) in vendor contracts can help to define the expectations and obligations of the parties involved in the supply chain, as well as the penalties for non-compliance. However, SLAs do not necessarily address the specific procedures and requirements for incident management, nor do they ensure effective communication and collaboration among the parties. Requiring security awareness training for vendor staff can help to reduce the likelihood and severity of incidents by enhancing the knowledge and skills of the vendor personnel who handle the organization’s data and systems. However, security awareness training does not guarantee that the vendor staff will follow the appropriate incident management processes, nor does it address the communication and coordination issues that may arise during an incident. Performing integration testing with vendor systems can help to ensure the compatibility and functionality of the systems that are part of the supply chain, as well as to identify and mitigate any vulnerabilities or errors that could lead to incidents. However, integration testing does not cover all the possible scenarios and risks that could affect the supply chain, nor does it provide the necessary communication and response mechanisms for incident management. References = 1, 2, 3, 4, 5

https://niccs.cisa.gov/education-training/catalog/skillsoft/cism-information-security-incident-management-part-1 https://ni ccs.cisa.gov/education-training/catalog/skillsoft/cism-information-security-incident-management-part-1