iam-condition-missing-key-false-negated-true

Status: IN

When a condition key is not present in the request context, most operators evaluate to false (no match), but negated operators (`StringNotLike`, `ArnNotLike`) evaluate to true — a critical policy evaluation gotcha.

Source: entries/2026/03/11/IAM-latest-UserGuide-reference_policies_elements_condition_operatorshtml.md

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