After implementing a new vulnerability management program, the security team decides to measure its performance. Which of the following metrics would best indicate the average time it takes to identify a vulnerability once it occurs?
Mean time to remediate
Mean time to detect
Mean time to respond
Alert volume
The correct metric to measure the average time it takes to identify a vulnerability is 'Mean time to detect' (MTTD). This KPI specifically focuses on the detection aspect of vulnerability management, making it a useful indicator of the effectiveness of a program in quickly identifying new vulnerabilities. 'Mean time to respond' (MTTR) measures response time after a vulnerability is detected, 'Mean time to remediate' calculates the time taken to resolve a vulnerability, and 'Alert volume' tracks the number of alerts generated, but none of these uniquely measure detection speed.
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