hardMultiple Choice
CISA Practice Question: An IS auditor is evaluating the effectiveness of…
An IS auditor is evaluating the effectiveness of an organization's information security awareness program. Which of the following is the BEST indicator of program effectiveness?
⚠ Common exam trap
A common mix-up: candidates confuse activity metrics (completion, acknowledgment, quiz scores) with outcome metrics (actual behavior change and incident reduction), leading them to choose a proxy for effectiveness rather than the direct measure of program impact.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Trend in security incidents attributed to human error
The best indicator because it directly measures the program's outcome: a reduction in security incidents caused by human error. While training completion, policy acknowledgment, and quiz scores measure activity or knowledge, they do not confirm that employees have changed their behavior. A downward trend in human-error-related incidents provides empirical evidence that the awareness program is effectively influencing employee actions in real-world scenarios.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Percentage of employees who completed the training
Why it's wrong here
Completion rates measure attendance, not whether behaviour changed; an employee can finish training and still click phishing links. It is tempting because completion is easy to report from an LMS, and it is the correct indicator when the goal is confirming mandatory training delivery rather than security awareness effectiveness.
- ✗
Number of employees who acknowledged the security policy
Why it's wrong here
Acknowledgement records receipt, not comprehension or behaviour change, so it measures compliance activity rather than awareness effectiveness. Tracking acknowledgements suits attestation and policy sign-off requirements, where evidence of receipt is the objective, but it cannot show whether staff actually recognise and report threats.
- ✗
Average score on the post-training quiz
Why it's wrong here
Quiz scores measure knowledge retention at one moment, not whether awareness translates into secure behaviour such as reduced phishing click rates. Post-training quizzes suit validating immediate learning after a course, but effectiveness indicators should reflect real-world outcomes like incident reporting and simulated-attack results.
- ✓
Trend in security incidents attributed to human error
Why this is correct
Falling incidents attributable to human error demonstrate changed behaviour, which is the ultimate objective of awareness training. Attendance, quiz scores and completion rates measure activity or knowledge, not whether staff actually apply secure practise in daily work.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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