A software path that acts on behalf of a user or system and therefore inherits trust to handle credentials, sessions, or commands. When that path is compromised, the attacker is effectively inside the delegated identity boundary rather than outside it.
Expanded Definition
A delegated machine path is the route a workload, automation job, API client, or agentic process uses to exercise another identity’s authority. In identity-heavy environments, that path may include service accounts, access tokens, session handoffs, signed requests, orchestration hooks, or remote command execution. The critical distinction is that the path is not merely a data flow. It is an authority-bearing mechanism that can inherit trust, permissions, and sometimes implicit business context from the originating user or system.
Definitions vary across vendors because some teams use related language such as trusted automation path, delegated access channel, or proxy execution path. NHI Management Group treats the concept more narrowly: the path matters because compromise of the path can expose the delegated identity boundary itself, not just the application handling it. That makes it relevant to NHI governance, service-to-service security, and agentic AI controls where tools and credentials are passed between components. The most authoritative way to anchor the concept is to map it to control expectations in NIST SP 800-53 Rev 5 Security and Privacy Controls, especially where authorization, session handling, and system interconnections are governed.
The most common misapplication is treating delegated machine paths as ordinary application traffic, which occurs when teams review payloads and endpoints but fail to assess the trust transferred through tokens, queues, brokers, or automation runners.
Examples and Use Cases
Implementing delegated machine paths rigorously often introduces tighter orchestration and tracing requirements, requiring organisations to weigh automation speed against the cost of stronger identity controls and auditability.
- A CI/CD pipeline uses a build token to push artifacts into production registries, making the pipeline itself a delegated path with real production authority.
- An AI agent uses a tool connector to create tickets or query internal systems, and the delegated path must be constrained so the agent cannot expand beyond its assigned purpose.
- A backup job assumes a service account to read encrypted storage and write snapshots, which means compromise of the job runner can expose privileged system access.
- An API gateway forwards user context to downstream services, and each hop must preserve or reduce authority rather than silently broadening it.
- A workflow platform triggers approvals or payments on behalf of a human operator, where the handoff from human intent to machine execution becomes a sensitive trust boundary.
These patterns are especially important in environments that combine SaaS automation, NHI, and privileged workflows. In identity-driven systems, a delegated machine path should be documented the same way a privileged session is documented, because the path itself may be the asset under protection. For design guidance on identity assurance and credential handling, teams often pair implementation reviews with NIST SP 800-63 digital identity guidance and internal policy for service credentials.
Why It Matters for Security Teams
Security teams need this term because delegated machine paths are where trust becomes transferable, and transferable trust is where blast radius grows fastest. If a path can mint tokens, replay sessions, invoke tools, or submit commands, then its compromise can bypass perimeter controls and make a legitimate system behave maliciously from the inside. That is why the relevant question is not only “is the workload authenticated?” but also “what authority did the workload inherit, and how far can it carry that authority?”
This is increasingly important for NHI and agentic AI governance, because autonomous software often operates through delegated paths rather than direct human logins. The same pattern shows up in privilege escalation, unauthorized lateral movement, and abuse of service-to-service trust. Teams should also treat logging, segmentation, token scope, and secret lifecycle management as part of path security, not separate concerns. Frameworks such as OWASP Non-Human Identities help contextualize how machine identities are governed across automation chains, while session and authentication assurance remain central in NIST digital identity guidance.
Organisations typically encounter delegated machine path failures only after a token abuse, pipeline compromise, or agent misfire, at which point the trust chain becomes operationally unavoidable to investigate and contain.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Non-Human Identity Top 10 and OWASP Agentic AI Top 10 address the attack and risk surface, while NIST CSF 2.0, NIST SP 800-63 and NIST SP 800-53 Rev 5 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | Delegated machine paths are core to NHI trust and lifecycle governance. | |
| NIST CSF 2.0 | PR.AC | Access control governs inherited authority and trust boundaries on machine paths. |
| NIST SP 800-63 | AAL2 | Identity assurance concepts inform how delegated credentials and sessions are trusted. |
| NIST SP 800-53 Rev 5 | AC-6 | Least privilege limits what a delegated path can do if compromised. |
| OWASP Agentic AI Top 10 | Agentic systems commonly execute through delegated tool and command paths. |
Inventory every delegated machine path and bind it to a managed non-human identity.
Related resources from NHI Mgmt Group
- What is the difference between delegated user access and machine authority for AI agents?
- Who is accountable when delegated access to a Tier 0 machine account causes compromise?
- How do security teams prove trust continuity across human, machine, and delegated access?
- What breaks when machine identity and delegated authority are treated as the same thing?
