From Exposure to Lockdown: How AWS Neutralizes Compromised IAM Credentials Through Managed Policies
Palo Alto Networks, Monday, September 21st, 2026
Unit 42 details how AWS's AWSCompromisedKeyQuarantine policy automatically locks down exposed IAM keys, aided by GitHub secret scanning.
Unit 42 examined how AWS mitigates risk from publicly exposed IAM access keys through its AWSCompromisedKeyQuarantine managed policy, tracing how the policy evolved alongside real-world cloud attacks.
Misuse of long-term IAM access keys, often exposed in public code repositories or environment variable files, remains a leading initial attack vector against AWS environments.
The article covers AWS's partner integration with GitHub's secret scanning program, walks through a real-world exposure test showing the quarantine policy being automatically attached, and offers monitoring strategies for security teams to detect quarantine events in their own logs.