When Identity is the Attack Path

Consider a cached access key on a single Windows machine. It got there the way most cached credentials do – a user logged in, and the key stored itself automatically. Standard AWS behavior. No one misconfigured anything or violated a policy. Yet that single key, which was easily accessible to a minor-league attacker, could have opened a path to some 98% of entities in the company’s cloud environment – nearly every critical workload the business depended on. 

This real-world exposure was caught before an attacker could use it. But the takeaway is clear: identity itself, and every permission it carries, has become the attack path.

Your environment runs on identity. Active Directory, cloud identity providers, service accounts, machine identities, and AI agents – all of these carry permissions that span systems and trust boundaries. A single stolen credential hands the attacker a legitimate identity – along with every permission attached to it. 

Despite this, most security programs still treat identity as a perimeter control – something to protect through authentication and access policies. Yet the real risk starts inside the front door. Once an attacker has a foothold, identity is what lets them advance, cross boundaries, and reach critical assets. Because identity is not a perimeter – it’s a highway that runs through every layer of your environment.

In this article, we’ll look at how cached credentials, excessive permissions, and forgotten role assignments can turn into attack paths across hybrid environments – and why the tools designed to catch them keep missing.

The Attack Path Runs Through Identity

The cached access key from that opening scenario is just one example of a much larger phenomenon. Across hybrid environments, identity

One Active Directory group membership that no one reviewed gives an attacker on a retail endpoint a direct path to the corporate domain. A developer SSO role provisioned for a cloud migration keeps its permissions long after the project wraps, giving anyone who compromises that identity a four-step route from developer access to production admin. What makes these real-world examples so dangerous is how they connect. That cached credential on the retail endpoint led to an overprivileged role in Active Directory, which led to a cloud workload with an attached admin policy. Together, the links in this type of identity exposure chain form a single attack path – from an initial foothold to a critical asset. 

How prevalent is this? Palo Alto found that identity weaknesses played a serious role in nearly 90% of its 2025 incident response investigations. And given the prevalence of AI agents taking on enterprise workloads, those numbers are likely to go up. SpyCloud’s 2026 Identity Exposure Report flagged non-human identity theft as one of the fastest-growing categories in the criminal underground, with a third of recovered non-human credentials tied to AI tools. 

What happens when one of those non-human identities…