{"id":"cloudtrail-failed-signin-username-hidden","text":"CloudTrail masks incorrect usernames in sign-in failure events as `HIDDEN_DUE_TO_SECURITY_REASONS` to prevent sensitive data leakage.","truth_value":"IN","source":"entries/2026/03/11/IAM-latest-UserGuide-cloudtrail-integrationhtml.md","source_url":"","source_hash":"cb7bc3bfff11f21a","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"cloudtrail-failed-signin-username-hidden","truth_value":"IN","reason":"premise"}]}}