The answer is to implement a change detection system that compares current configurations to an approved, immutable baseline and alerts on any deviation, with strict change control for baseline updates. This is correct because the root cause of the incident was baseline corruption—the baseline was updated to include a misconfiguration, and the subsequent reversal was not documented, so the monitoring scripts saw the misconfiguration as normal. Preventing baseline corruption in continuous monitoring requires that the baseline itself be immutable, meaning it cannot be altered without formal, auditable approval, and that any deviation from it triggers an immediate alert. On the CRISC exam, this scenario tests your understanding of change management and configuration integrity within continuous monitoring programs; a common trap is to focus on improving detection speed rather than fixing the flawed baseline update process. Remember the key principle: if the baseline can be silently changed, your monitoring is blind—keep the baseline locked down, and let alerts catch every drift.
CRISC Risk and Control Monitoring and Reporting Practice Question
This CRISC practice question tests your understanding of risk and control monitoring and reporting. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A multinational financial services company has implemented a continuous monitoring program for its trading systems. The program uses automated scripts to check system configurations against a baseline every hour. Recently, the company experienced a significant security incident where a malicious actor exploited a misconfigured firewall rule to exfiltrate sensitive customer data. Post-incident analysis revealed that the misconfiguration had been present for 72 hours before detection. The monitoring scripts did not detect the change because the baseline had been updated two weeks prior to include the misconfiguration as part of a planned change that was later reversed without updating the baseline. The company's change management process requires that all configuration changes be approved and documented, but the reversal of the change was not documented. The incident response team was only alerted when a customer reported suspicious activity. The risk practitioner is tasked with recommending improvements to prevent recurrence. Which of the following is the BEST course of action?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Enhance incident response procedures to include notification of customers within 24 hours.
Why wrong: Does not prevent the incident.
B
Implement a change detection system that compares current configurations to an approved, immutable baseline and alerts on any deviation, with strict change control for baseline updates.
Addresses root cause of baseline manipulation.
C
Increase the frequency of monitoring scripts to every 30 minutes.
Why wrong: Would not detect if baseline is incorrect.
D
Require manual review of all configuration changes by a second analyst.
Why wrong: Prone to human error and not automated.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Implement a change detection system that compares current configurations to an approved, immutable baseline and alerts on any deviation, with strict change control for baseline updates.
Option B is correct because the root cause is that the baseline was updated to include the misconfiguration, and the subsequent reversal was not documented or reflected in the baseline. A change detection system that compares current configurations to an approved, immutable baseline and alerts on any deviation, with strict change control for baseline updates, directly addresses this by ensuring that only approved changes are in the baseline and any unapproved deviation (including reversals) triggers an alert. This prevents the monitoring system from accepting unauthorized changes as normal.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Enhance incident response procedures to include notification of customers within 24 hours.
Why it's wrong here
Does not prevent the incident.
✓
Implement a change detection system that compares current configurations to an approved, immutable baseline and alerts on any deviation, with strict change control for baseline updates.
Why this is correct
Addresses root cause of baseline manipulation.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Increase the frequency of monitoring scripts to every 30 minutes.
Why it's wrong here
Would not detect if baseline is incorrect.
✗
Require manual review of all configuration changes by a second analyst.
Why it's wrong here
Prone to human error and not automated.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates focus on the monitoring frequency or manual review, but the real failure is the baseline integrity—the monitoring system was working correctly but against a corrupted baseline, so the solution must enforce that the baseline itself is immutable and only updated through strict change control.
Detailed technical explanation
How to think about this question
The core issue is a failure in configuration management and baseline integrity. In practice, a robust change detection system uses cryptographic hashing (e.g., SHA-256) of configuration files to create an immutable baseline; any deviation—even a reversal—would produce a hash mismatch and trigger an alert. The monitoring scripts in the scenario were likely using a simple comparison against a mutable baseline file, which allowed the misconfiguration to be accepted as 'normal' after the baseline was updated. Real-world implementations like Tripwire or OSSEC use this hash-based approach to ensure that only authorized changes (with proper change tickets) update the baseline, preventing silent drift.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Risk and Control Monitoring and Reporting — This question tests Risk and Control Monitoring and Reporting — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Implement a change detection system that compares current configurations to an approved, immutable baseline and alerts on any deviation, with strict change control for baseline updates. — Option B is correct because the root cause is that the baseline was updated to include the misconfiguration, and the subsequent reversal was not documented or reflected in the baseline. A change detection system that compares current configurations to an approved, immutable baseline and alerts on any deviation, with strict change control for baseline updates, directly addresses this by ensuring that only approved changes are in the baseline and any unapproved deviation (including reversals) triggers an alert. This prevents the monitoring system from accepting unauthorized changes as normal.
What should I do if I get this CRISC question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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