IAM Overprovisioning Uncovered: How We Discovered a $1,000 Monthly AWS Cost Leak

IAM Access Analyzer's perceived simplicity can mask critical overprovisioning issues that directly impact your AWS budget and security posture. This case study reveals how inadequate least-privilege enforcement led to a $1,000/month cost leak through unnecessarily permissive Lambda roles. Organizations relying on automated access analysis must implement complementary manual reviews to prevent both unexpected expenses and potential security vulnerabilities.