Cached AWS Access Keys: A Cloud Identity Attack Path

The Hacker News highlights a critical attack vector: a single cached AWS access key on a Windows machine. This isn’t a misconfiguration; it’s standard behavior when a user logs in, leading to automatic key storage. Despite its seemingly innocuous origin, such a key, if compromised, could grant an attacker access to a staggering 98% of an organization’s cloud entities.

This scenario underscores a fundamental flaw in how many organizations perceive identity and access management (IAM) in the cloud. A low-level compromise on an endpoint can escalate dramatically, providing broad access to critical cloud resources. Attackers understand that identity, not just network perimeter, is the new control plane.

Defenders must recognize that endpoint security directly impacts cloud security when identities are intertwined. The attacker’s calculus is simple: find the weakest link, often an endpoint with cached credentials, and leverage it for lateral movement into high-value cloud environments.