Isaca CISM - Certified Information Security Manager

Performing a gap analysis is the first step to ensure the security policy framework encompasses the new business model because it is a process of comparing the current state of security policies and controls with the desired or required state. A gap analysis helps to identify the strengths and weaknesses of the existing security policy framework, as well as the opportunities and threats posed by the new business model. A gap analysis also helps to prioritize the actions and resources needed to close the gaps and align the security policy framework with the new business objectives and requirements. Therefore, performing a gap analysis is the correct answer.

 Integrating risk management into the vendor management process is the most effective way to ensure the security of services and solutions delivered by third-party vendors, as it enables the organization to identify, assess, treat, and monitor the risks associated with outsourcing. Risk management should be applied throughout the vendor life cycle, from selection, contracting, onboarding, monitoring, to termination. Risk management also helps the organization to define the security requirements, expectations, and responsibilities for the vendors, and to evaluate their performance and compliance. (From CISM Review Manual 15th Edition)

The incident response team can best leverage the results of a business impact analysis (BIA) by assigning restoration priority during incidents. A BIA is a process that identifies and evaluates the criticality and dependency of the organization’s business functions, processes, and resources, and the potential impacts and consequences of their disruption or loss. The BIA results provide the basis for determining the recovery objectives, strategies, and plans for the organization’s business continuity and disaster recovery. By using the BIA results, the incident response team can prioritize the restoration of the most critical and time-sensitive business functions, processes, and resources, and allocate the appropriate resources, personnel, and time to minimize the impact and duration of the incident.

Determining total cost of ownership (TCO) (B) is not a relevant way to leverage the results of a BIA, as it is not directly related to incident response. TCO is a financial metric that estimates the total direct and indirect costs of owning and operating an asset or a system over its lifecycle. TCO may be useful for evaluating the cost-effectiveness and return on investment of different security solutions or alternatives, but it does not help the incident response team to respond to or recover from an incident.

Evaluating vendors critical to business recovery © is also not a relevant way to leverage the results of a BIA, as it is not a primary responsibility of the incident response team. Evaluating vendors critical to business recovery is a part of the vendor management process, which involves selecting, contracting, monitoring, and reviewing the vendors that provide essential products or services to support the organization’s business continuity and disaster recovery. Evaluating vendors critical to business recovery may be done before or after an incident, but not during an incident, as it does not contribute to the incident response or restoration activities.

Calculating residual risk after the incident recovery phase (D) is also not a relevant way to leverage the results of a BIA, as it is not a timely or effective use of the BIA results. Residual risk is the risk that remains after the implementation of risk treatment or mitigation measures. Calculating residual risk after the incident recovery phase may be done as a part of the incident review or improvement process, but not during the incident response or restoration phase, as it does not help the incident response team to resolve or contain the incident.

References = CISM Review Manual, 16th Edition, Chapter 4: Information Security Incident Management, Section: Incident Response Plan, Subsection: Business Impact Analysis, page 182-1831

 Cost-benefit analysis results are the best way to support the business case for an increase in the information security budget because they help to demonstrate the value and return on investment of the proposed security initiatives or projects. A cost-benefit analysis is a method of comparing the costs and benefits of different alternatives or options, taking into account both quantitative and qualitative factors. A cost-benefit analysis helps to justify the need and feasibility of the security budget, as well as to prioritize the security spending based on the expected outcomes and impacts. Therefore, cost-benefit analysis results are the correct answer.

Communicating and enforcing policies demonstrates leadership commitment and drives behavior across the organization, fostering a culture of security.

“Policies must be effectively communicated and enforced to influence culture and employee behavior.”

— CISM Review Manual 15th Edition, Chapter 1: Information Security Governance, Section: Security Culture*

A security maturity assessment evaluates not only current vulnerabilities but also governance structures, risk management practices, incident response, and ongoing improvement processes. It provides a holistic and strategic view of the security posture.

“Maturity assessments provide a comprehensive evaluation of an organization’s security controls and their alignment with business objectives.”

— CISM Review Manual 15th Edition, Chapter 1: Information Security Governance, Section: Maturity Models*

Other methods like penetration tests or vulnerability assessments offer snapshots of technical weaknesses, but they lack strategic depth.

 Before implementing any changes to the security incident response plan, the information security manager should first conduct a gap analysis to identify the current state of the plan and compare it with the new requirements. A gap analysis is a systematic process of evaluating the differences between the current and desired state of a system, process, or program. A gap analysis can help to identify the strengths and weaknesses of the existing plan, the gaps that need to be addressed, the priorities and dependencies of the actions, and the resources and costs involved. A gap analysis can also help to create a business case for the changes and justify the investment. A gap analysis can be conducted using various methods and tools, such as frameworks, standards, benchmarks, questionnaires, interviews, audits, or tests1234.

References =

CISM Review Manual 15th Edition, page 1631

CISM certified information security manager study guide, page 452

How To Conduct An Information Security Gap Analysis3

PROACTIVE DETECTION - GOOD PRACTICES GAP ANALYSIS RECOMMENDATIONS4

The most effective course of action when employees are using free cloud storage services to store company data through their mobile devices is to assess the business need to provide a secure solution, such as a corporate-approved cloud service or a virtual desktop environment. Assessing the business need can help understand why employees are using free cloud storage services, what kind of data they are storing, and what are the security risks and requirements. Based on the assessment, the security manager can propose a secure solution that meets the business needs and complies with the BYOD policy. The other options, such as allowing the practice to continue, disabling remote access, or initiating remote wipe, may not address the underlying business need or may cause disruption or data loss. References:

https://www.digitalguardian.com/blog/byod-security-expert-tips-policy-mitigating-risks-preventing-breach

https://news.microsoft.com/en-xm/2021/03/18/how-to-have-secure-remote-working-with-a-byod-policy/

https://www.trendmicro.com/vinfo/us/security/news/cybercrime-and-digital-threats/-infosec-guide-bring-your-own-device-byod

Baseline controls are the minimum set of security requirements that apply to all information systems in an organization, regardless of their specific functions or characteristics. They are derived from the organization’s security policies, standards, and best practices, and they reflect the organization’s risk appetite and tolerance. Baseline controls provide a consistent and comprehensive foundation for the security of the information systems, and they can be tailored or supplemented by additional controls as needed for specific systems or situations. The other options are not as comprehensive as baseline controls, as they may only address certain aspects or aspects of the security requirements, or they may vary depending on the system or the context. For example, risk assessment results are an important input for defining the security requirements, but they are not the requirements themselves. Audit findings are an output of evaluating the compliance and effectiveness of the security requirements, but they are not the requirements themselves. Key risk indicators (KRIs) are metrics that measure the level of risk exposure and performance of the security requirements, but they are not the requirements themselves. References =

CISM Review Manual 15th Edition, page 113: “Baseline controls are the minimum security requirements that apply to all systems within the organization.”

CISM Review Questions, Answers & Explanations Database - 12 Month Subscription, question 478: “Baseline controls are the minimum security requirements that apply to all systems within the organization. They are derived from the organization’s security policies, standards, and best practices, and they reflect the organization’s risk appetite and tolerance.”

The greatest benefit of information asset classification is providing a basis for imple-menting a need-to-know policy. Information asset classification is a process of catego-rizing information based on its level of sensitivity and importance, and applying appro-priate security controls based on the level of risk associated with that information1. A need-to-know policy is a principle that states that access to information should be granted only to those individuals who require it to perform their official duties or tasks2. The purpose of a need-to-know policy is to limit the exposure of sensitive information to unauthorized or unnecessary parties, and to reduce the risk of data breaches, leaks, or misuse. Information asset classification provides a basis for implementing a need-to-know policy by:

•Defining the value and protection requirements of different types of information

•Labeling the information with the appropriate classification level, such as public, internal, confidential, secret, or top secret

•Establishing the roles and responsibilities of information owners, custodians, and users

•Enforcing access controls and encryption for the information

•Documenting the security policies and procedures for the information

By providing a basis for implementing a need-to-know policy, information asset classi-fication can help organizations to protect their sensitive information, comply with rele-vant laws and regulations, and achieve their business objectives. The other options are not the greatest benefits of information asset classification. Helping to determine the recovery point objective (RPO) is not a benefit, but rather a consequence of applying security controls based on the classification level. RPO is the acceptable amount of data loss in case of a disruption3. Supporting segregation of duties is not a benefit, but rather a prerequisite for implementing a need-to-know policy. Segregation of duties is a principle that states that no single individual should have control over two or more phases of a business process or transaction that are susceptible to errors or fraud4. De-fining resource ownership is not a benefit, but rather a component of information asset classification. Resource ownership is the assignment of accountability and authority for an information asset to an individual or a group5. References: 1: Information Classifi-cation - Advisera 2: Need-to-Know Principle - NIST 3: Recovery Point Objective - NIST 4: Segregation of Duties - NIST 5: Resource Ownership - NIST : Information Classification in Information Security - GeeksforGeeks : Information Asset Classification Policy - UCI

Reverse lookups can be used to prevent successful IP spoofing. IP spoofing is a type of attack in which an attacker sends packets with a false source IP address in order to disguise their identity or impersonate another system. By performing reverse lookups on the source IP address of incoming packets, the system can verify that the packets are coming from a trusted source, and any packets with an invalid or spoofed source IP can be discarded. This is an important measure for preventing IP spoofing, and can help to reduce the risk of other types of attacks, such as DoS attacks, session hacking, and phishing attacks.