An attacker cannot query 169.254.169.254 from the public internet because link-local addresses are non-routable outside the local host. To bypass this restriction, attackers use SSRF.
The credentials returned are temporary but highly powerful, enabling the attacker to: Download sensitive company data. Launch New Instances: Increase costs and compute resources. An attacker cannot query 169
The callback URL http://169.254.169.254/latest/meta-data/iam/security-credentials/ is more than a simple string—it is a potential skeleton key to your cloud infrastructure. It represents a fundamental tension between operational ease and security. While AWS has provided excellent tools like IMDSv2 and GuardDuty, the responsibility ultimately lies with developers and cloud architects to adopt a “never trust, always verify” mindset. always verify” mindset.