Per-User Credential Path

Expanded Definition

A per-user credential path is the mechanism that preserves user attribution after authentication, so an action remains linked to the individual even when it passes through a shared service, broker, or agent. In NHI governance, this matters whenever multiple people operate behind one application surface but require distinct accountability.

Definitions vary across vendors because some describe the pattern as delegated identity, others as request provenance, and others as identity propagation. The security goal is the same: avoid collapsing many users into one opaque service identity that obscures who approved or triggered a sensitive action. This is closely related to assurance concepts in NIST SP 800-63 Digital Identity Guidelines and to least-privilege design in OWASP Non-Human Identity Top 10, because identity continuity only has value if the downstream permissions are also constrained.

The most common misapplication is treating a shared API key or service account as sufficient user traceability, which occurs when teams log the gateway identity but not the original authenticated user.

Examples and Use Cases

Implementing per-user credential paths rigorously often introduces more identity plumbing, requiring organisations to weigh auditability against added token exchange and policy complexity.

• A customer support platform routes all requests through one backend, but the original agent identity is propagated so each case update can be reviewed later.
• An AI assistant uses a shared orchestration layer, yet each prompt and tool call retains the initiating employee identity for approval and investigation.
• A cloud automation portal invokes privileged workflows through a service intermediary, while the user’s authenticated identity is carried into the audit trail and authorization decision.
• A security review of compromised secret handling shows why identity propagation must be paired with strong credential hygiene, as highlighted in Guide to the Secret Sprawl Challenge and the LLMjacking: How Attackers Hijack AI Using Compromised NHIs research.
• Federated access patterns for workforce and workload identities can be designed around trusted identity assertions, as reflected in the NIST SP 800-63 Digital Identity Guidelines.

Why It Matters in NHI Security

Per-user credential paths prevent accountability gaps, especially in shared tooling where a single backend identity can otherwise blur who initiated a change, approved a request, or triggered a tool action. Without that lineage, incident responders lose the ability to separate legitimate use from abuse, and investigators cannot reliably reconstruct what happened after a compromise.

This becomes more urgent in environments with secret sprawl and exposed credentials. NHIMG research notes that 23.7% of organisations share secrets through insecure methods such as email or messaging applications, while 88.5% say their non-human IAM practices lag behind or only match their human IAM maturity. That gap makes provenance harder to preserve and easier for attackers to exploit. The related risks are visible in cases such as the CI/CD pipeline exploitation case study and the 230M AWS environment compromise, where identity confusion and credential misuse can accelerate blast radius.

Organisations typically encounter the operational cost of missing per-user credential paths only after a breach, when forensic reconstruction and access review become operationally unavoidable to address.

Related resources from NHI Mgmt Group

• Dynamic Credential Management
• How should security teams reduce credential stuffing risk across user and machine identities?
• How do you know if per-user Slack connections are actually governed?
• What breaks when a Kubernetes storage backend trusts user-controlled path templates?