A security analyst needs to calculate the Mean Time to Remediate (MTTR) for a recent security incident. Which of the following time periods BEST represents the MTTR?
The total time from the initial detection of the incident until it has been fully resolved and verified.
The time it takes for the security team to develop a patch after an incident has been confirmed.
The time elapsed from when a patch is available to when it is successfully deployed across all affected systems.
The average time between the discovery of similar types of incidents.
The correct answer is that Mean Time to Remediate (MTTR) is the total time from the initial detection of an issue until it has been fully resolved and verified. The other options are incorrect because they only describe portions of the overall remediation lifecycle or different metrics altogether. The time to develop a patch is only one phase of remediation. The time from patch availability to deployment is closer to a 'Mean Time to Patch' metric. The time between discovering similar vulnerabilities relates to threat frequency, not remediation speed.
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What factors can influence the MTTR calculation?
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How does MTTR differ from other metrics like Mean Time to Detect (MTTD) or Mean Time to Respond (MTTRs)?
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What tools or practices can help improve the MTTR metric?