CISM Information Security Program Practice Question
A security program includes multiple metrics. Which metric best indicates the program's effectiveness in reducing overall risk?
⚠ Common exam trap
Test-takers frequently confuse operational metrics (incident count, MTTD, training completion) with risk-based metrics, assuming any positive trend in a security metric automatically indicates reduced overall risk, when only a composite risk score directly measures risk reduction.
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
✓
Composite risk score based on threat, vulnerability, and control assessments.
A composite risk score aggregates threat, vulnerability, and control assessment data into a single metric that directly reflects the organization's residual risk posture. This metric is the most holistic indicator of program effectiveness because it quantifies how well security controls reduce the likelihood and impact of threats exploiting vulnerabilities, aligning with the CISM focus on risk management.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Composite risk score based on threat, vulnerability, and control assessments.
Why this is correct
Directly reflects risk posture and reduction efforts.
- ✗
Number of security incidents per quarter.
Why it's wrong here
Can fluctuate due to detection improvements; not a direct measure of risk reduction.
- ✗
Mean time to detect (MTTD) incidents.
Why it's wrong here
Measures detection speed, not risk level.
- ✗
Percentage of employees who completed security training.
Why it's wrong here
Training completion doesn't equal behavior change or risk reduction.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CISM practice question is part of Courseiva's free ISACA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CISM exam.