Detection coverage is the extent to which a security program can identify relevant attacker behaviors, risks, and incident types across its environment. It matters because security teams often assume they can see more than they actually can.
What is Detection Coverage?
Detection coverage reflects whether telemetry, detections, and workflows exist for the threats and attack paths that matter most. It may be assessed by threat model, platform, MITRE ATT&CK technique, business-critical asset, or incident scenario.
What Detection Coverage Commonly Depends On
Common factors include log availability, endpoint visibility, cloud telemetry, identity monitoring, rule quality, analyst workflows, and validation through simulation or testing.
Detection Coverage vs. Alert Volume
Alert volume shows how much noise or activity exists. Detection coverage shows whether meaningful threats can actually be seen at all.
Frequently Asked Questions
Why is detection coverage important?
Because blind spots create false confidence and let important attacker behaviors go unseen.
How do teams improve detection coverage?
By mapping threats to telemetry, building better detections, validating assumptions, and closing known visibility gaps over time.
