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From Exposure to Lockdown: How AWS Neutralizes Compromised IAM Credentials through Managed Policies

⚠️ Region Alert: UAE/Middle East

This article examines the mechanisms AWS employs to mitigate security risks arising from exposed IAM access keys, specifically through the AWSCompromisedKeyQuarantine managed policy. It details the evolution of this policy from V1 to V3, highlighting how AWS has expanded its "Deny" permissions to counter emerging threats like cryptomining, S3 data extortion, and unauthorized AI model invocations via Amazon Bedrock. The research demonstrates how these protections are automatically applied within seconds of a credential leak.

Furthermore, the article explores the collaborative integration between GitHub's secret scanning program and AWS. It provides a technical timeline of a real-world exposure test, showing how GitHub's push protection and validity checks interact with AWS to trigger quarantine events. By analyzing CloudTrail logs and specific GitHub user agents, the author provides actionable monitoring strategies for security teams to detect and respond to compromised credentials before they can be exploited by threat actors.


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