A cybersecurity team is conducting a quarterly review of their vulnerability management program. They have implemented a new process to prioritize and remediate vulnerabilities based on a combined risk score. To assess the effectiveness of this new process, which of the following metrics would be MOST valuable to track over time and present to management?
- APercentage of security patches deployed on schedule.
- BNumber of new vulnerabilities identified per scan.
- CAverage time from vulnerability discovery to remediation for critical assets.
- DTotal number of vulnerability scans performed.
Show answer & explanationAnswer & explanation
Correct answer: C. Average time from vulnerability discovery to remediation for critical assets.
To assess the effectiveness of a *prioritization and remediation* process, measuring the 'Average time from vulnerability discovery to remediation for critical assets' directly evaluates if the new process is successfully reducing the exposure window for the most impactful vulnerabilities. This metric highlights the efficiency and impact of the prioritization efforts.
Why the other options are wrong
- A. While related to remediation, 'patches deployed on schedule' doesn't fully capture the impact of prioritization and the overall time to reduce risk, especially for non-patchable vulnerabilities or specific critical assets.
- B. This metric focuses on discovery, not the efficiency or impact of the remediation process.
- D. This measures activity, not the effectiveness of the remediation process itself.
Vulnerability Remediation Effectiveness Metric
A key metric for vulnerability remediation effectiveness measures the average time elapsed from when a vulnerability is discovered until it is successfully mitigated or patched, particularly focusing on critical assets or high-severity findings.
- Directly reflects the efficiency of the vulnerability management program.
- Crucial for demonstrating risk reduction over time.
- Highlights the impact of prioritization strategies.
Memory trick: Vulnerability Management: Find, Prioritize, Fix, Measure Time.