Complete CISM Isaca Materials

 The online bank should first isolate the affected network segment, as this is the most effective way to contain the attack and prevent it from spreading to other parts of the network or compromising more data or systems. Isolating the affected network segment also helps to preserve the evidence and facilitate the investigation and recovery process. Reporting the root cause to the board of directors, assessing whether personally identifiable information (Pll) is compromised, and shutting down the entire network are not the first actions that the online bank should take, as they may not be feasible or appropriate at the time of the attack, and may cause more disruption, confusion, or damage to the business operations and reputation. References = CISM Review Manual 2023, page 1641; CISM Review Questions, Answers & Explanations Manual 2023, page 362; ISACA CISM - iSecPrep, page 213

= A tabletop exercise is the best type of exercise for an incident response team at the first drill, as it is a low-cost, low-risk, and high-value method to test and evaluate the incident response plan, procedures, roles, and capabilities. A tabletop exercise is a simulation of a realistic scenario that involves a security incident, and requires the participation and discussion of the incident response team members and other relevant stakeholders. The tabletop exercise allows the incident response team to identify and address the gaps, issues, or challenges in the incident response process, and to improve the communication, coordination, and collaboration among the team members and other parties. The tabletop exercise also helps to enhance the knowledge, skills, and confidence of the incident response team members, and to prepare them for more complex or advanced exercises or real incidents.

A red team exercise (A) is a type of exercise that involves a group of ethical hackers or security experts who act as adversaries and attempt to compromise the organization’s security defenses, systems, or processes. A red team exercise is a high-cost, high-risk, and high-value method to test and evaluate the security posture and resilience of the organization, and to identify and exploit the security weaknesses or vulnerabilities. However, a red team exercise is not the best type of exercise for an incident response team at the first drill, as it is more suitable for a mature and experienced team that has already tested and validated the incident response plan, procedures, roles, and capabilities.

A black box penetration test (B) is a type of security testing that simulates a malicious attack on the organization’s systems or processes, without any prior knowledge or information about them. A black box penetration test is a high-cost, high-risk, and high-value method to test and evaluate the security posture and resilience of the organization, and to identify and exploit the security weaknesses or vulnerabilities. However, a black box penetration test is not the best type of exercise for an incident response team at the first drill, as it is more suitable for a mature and experienced team that has already tested and validated the incident response plan, procedures, roles, and capabilities.

A disaster recovery exercise © is a type of exercise that simulates a catastrophic event that disrupts or destroys the organization’s critical systems or processes, and requires the activation and execution of the disaster recovery plan, procedures, roles, and capabilities. A disaster recovery exercise is a high-cost, high-risk, and high-value method to test and evaluate the disaster recovery posture and resilience of the organization, and to identify and address the recovery issues or challenges. However, a disaster recovery exercise is not the best type of exercise for an incident response team at the first drill, as it is more suitable for a mature and experienced team that has already tested and validated the incident response plan, procedures, roles, and capabilities.

References = CISM Review Manual, 16th Edition, Chapter 4: Information Security Incident Management, Section: Incident Response Plan, Subsection: Testing and Maintenance, page 184-1851

Containment is the action that MUST happen immediately following the identification of a malware incident because it aims to isolate the affected systems or networks from the rest of the environment and prevent the spread or escalation of the malware. Containment can involve disconnecting the systems or networks from the internet, blocking or filtering certain ports or protocols, or creating separate VLANs or subnets for the isolated systems or networks. Containment is part of the incident response process and should be performed as soon as possible after detecting a malware incident12. Preparation (A) is the phase that happens before the identification of a malware incident, where the organization establishes the incident response plan, team, roles, resources, and tools. Preparation is essential for ensuring the readiness and capability of the organization to respond to malware incidents effectively and efficiently12. Recovery (B) is the phase that happens after the containment and eradication of a malware incident, where the organization restores the normal operations of the systems or networks, verifies the functionality and security of the systems or networks, and implements the preventive and corrective measures to avoid or mitigate future malware incidents. Recovery is the final phase of the incident response process and should be performed after ensuring that the malware incident is fully resolved and the systems or networks are clean and secure12. Eradication (D) is the phase that happens after the containment of a malware incident, where the organization removes the malware and its traces from the systems or networks, identifies the root cause and impact of the malware incident, and collects and preserves the evidence for analysis and investigation. Eradication is an important phase of the incident response process, but it does not happen immediately after the identification of a malware incident12. References = 1: CISM Review Manual 15th Edition, page 308-3091; 2: Cybersecurity Incident Response Exercise Guidance - ISACA2

 Replacing key controls with weaker compensating controls may introduce new vulnerabilities or increase the likelihood or impact of existing threats, thus raising the risk levels beyond the acceptable limits defined by the risk appetite and tolerance of the organization. This may expose the organization to unacceptable losses or damages, such as financial, reputational, legal, or operational. Therefore, the information security manager should be most concerned about the potential elevation of risk levels and ensure that the risk owner is aware of the consequences and accountable for the decision.

References = CISM Review Manual, 16th Edition, Chapter 2: Information Risk Management, Section: Risk Treatment, page 941.