TotalCloud Insights: Unmasking AWS Instance Metadata Service v1 (IMDSv1)-The Hidden Flaw in AWS Security

This report explains how AWS IMDSv1 is susceptible to Server-Side Request Forgery (SSRF) attacks that can expose EC2 instance metadata and IAM credentials—citing a 2019 breach that allegedly exposed data for over 100 million customers and cost ~$150M—and contrasts IMDSv1 with IMDSv2, which uses session tokens and other safeguards; it concludes with best practices (limit or disable IMDSv1, least-privilege IAM) and recommends automated detection/remediation via Qualys TotalCloud.