What is Mean Time to Detect?
Mean Time to Detect (MTTD) measures the average elapsed time between when a security incident begins and when the SOC identifies it. It is a critical indicator of detection capability and monitoring effectiveness.
Definition
- Mean Time to Detect
- Mean Time to Detect (MTTD) measures the average elapsed time between when a security incident begins and when the SOC identifies it. It is a critical indicator of detection capability and monitoring effectiveness.
How Mean Time to Detect Works
MTTD is calculated by averaging the time difference between incident start (estimated from forensic artifacts or attacker timestamps) and detection time (first alert or analyst identification) across all incidents in a measurement period. Industry benchmarks show average MTTD for confirmed breaches is measured in days to weeks, highlighting significant room for improvement.
Factors that reduce MTTD: comprehensive log collection, well-tuned correlation rules, low false-positive rates, 24/7 monitoring, threat hunting, and rapid threat intelligence integration.
Factors that increase MTTD: log coverage gaps, alert fatigue from high false-positive rates, limited monitoring hours, lack of behavioral detection, and no threat hunting program.
Every minute of MTTD delay translates to additional attacker dwell time and potential impact expansion.
Mean Time to Detect in SOC Operations
Reducing MTTD is a primary SOC operational goal. SOCSimulator tracks response times within scenarios to help you understand personal triage speed benchmarks and identify workflow bottlenecks. Improving MTTD at the individual level, through faster tool proficiency, better false-positive pattern recognition, and efficient investigation playbooks, contributes directly to the team's overall metric.
Practice Mean Time to Detect in a Real SOC
SOCSimulator provides hands-on training with realistic SIEM, XDR, and Firewall interfaces. Build real analyst skills investigating mean time to detect scenarios with zero consequences — free forever.
Related Terms
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Alert triage is the structured process of reviewing, prioritizing, and investigating security alerts...
In SOC operations, triage is the initial assessment where analysts rapidly evaluate an alert to dete...
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