Isaca Updated CRISC Exam Questions and Answers by dolcie

Monitoring the percentage of patches deployed within the target time frame is a critical key control indicator for the patch management process. It reflects the organization's ability to apply necessary updates promptly, reducing exposure to known vulnerabilities. Timely patch deployment is essential for maintaining system security and compliance with organizational policies.​

Independent Assessment:

Objective Evaluation: An assessment by a qualified independent party ensures that the evaluation of the new controls is unbiased and thorough. It provides a credible verification of the control's effectiveness.

Expertise and Standards: Independent assessors bring specialized expertise and follow established standards and best practices, ensuring a comprehensive review of the control implementation.

Validation and Assurance: This assessment provides assurance to stakeholders that the controls are functioning as intended and meet the required security and operational standards.

Comparison with Other Options:

Post-Implementation Review by Key Personnel: While valuable, this review may lack the objectivity and thoroughness of an independent assessment.

Senior Management Sign-Off: Sign-off from senior management is important but does not provide the detailed validation of control effectiveness that an independent assessment offers.

Daily Operation of Robots without Human Interference: This indicates operational stability but does not verify that all controls are functioning as intended.

Best Practices:

Regular Independent Assessments: Schedule regular independent assessments to continuously validate the effectiveness of controls.

Comprehensive Reporting: Ensure that the independent assessment includes comprehensive reporting on findings and recommendations for improvement.

Follow-Up Actions: Implement any recommended actions from the assessment to address identified gaps or weaknesses in the controls.

 Digital Signature Software:

Digital signatures are used to verify the authenticity and integrity of a message, document, or software. They provide cryptographic proof that the information has not been altered and that it comes from a verified source.

 Importance of Nonrepudiation:

Nonrepudiation ensures that the sender of the message cannot deny having sent the message and the recipient cannot deny having received it. This is critical for legal and security purposes, as it provides undeniable proof of the origin and integrity of the information.

 Selecting Digital Signature Software:

When selecting digital signature software, the most important consideration is that it provides strong nonrepudiation capabilities. This ensures that all parties involved can trust the authenticity and integrity of the signed data.

 Comparing Other Considerations:

Availability:Ensures the software is accessible when needed but does not directly impact the trustworthiness of the signatures.

Accuracy:Important but generally inherent in properly functioning digital signature software.

Completeness:Ensures all required information is included but nonrepudiation is the critical factor for security and legal purposes.

 References:

The CISSP Study Guide emphasizes the importance of nonrepudiation in digital signature technology to ensure authenticity and accountability (Sybex CISSP Study Guide, Chapter 7: PKI and Cryptographic Applications)​​.

 The PRIMARY basis for selecting a security control is the ability to mitigate risk, because it is the measure of how well the control can prevent or reduce the occurrence or impact of the risk, and how effectively the control can achieve the desired level of security and protection for the system and the data. The ability to mitigate risk is the most important criterion for selecting a security control, as it directly relates to the purpose and value of the control. The other options are not the primary basis, because:

Option A: To achieve the desired level of maturity is a goal of selecting a security control, but not the primary basis. The desired level of maturity is the state or condition of the security control that reflects its quality, consistency, and reliability, and it should be aligned with the organization’s security objectives and standards. The desired level of maturity is a result of selecting a security control, not a reason for selecting it.

Option B: The materiality of the risk is a factor of selecting a security control, but not the primary basis. The materiality of the risk is the degree or extent of the risk that affects the organization’s performance, reputation, and value, and it should be considered when selecting a security control, but it is not the only or the most important factor. The materiality of the risk is an input to selecting a security control, not an output of selecting it.

Option D: The cost of the control is a constraint of selecting a security control, but not the primary basis. The cost of the control is the amount of resources and expenditure that are required to implement and maintain the control, and it should be balanced with the benefit and effectiveness ofthe control, but it is not the only or the most important constraint. The cost of the control is a limitation of selecting a security control, not a motivation for selecting it. References = Risk and Information Systems Control Study Manual, 7th Edition, ISACA, 2020, p. 211.