Detection Gap

Noun · Security & Infosec

Definitions

  1. A meaningful area of attacker behavior, system activity, or evidence collection that current monitoring cannot observe or alert on. Detection gaps are often found during purple-team exercises, incident reviews, or architecture changes.

    In plain English: An important kind of malicious activity that current security monitoring does not catch.

    Example: "The exercise exposed a detection gap around OAuth token abuse because no one was collecting the right audit events."

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