Distributed Custody

Expanded Definition

Distributed custody describes a state where data, secrets, or operational responsibility is split across multiple systems, teams, and organisations, so no single party has end-to-end control. In NHI governance, that usually means credentials, approvals, logging, and storage live in different places, which weakens accountability and obscures ownership. Definitions vary across vendors, but the practical meaning is consistent: custody is fragmented enough that policy enforcement becomes dependent on coordination rather than design. For identity and secret handling, this should be read alongside the NIST Cybersecurity Framework 2.0, especially where asset visibility, access control, and governance need to remain traceable across domains.

Distributed custody is not the same as normal delegation. Delegation can still preserve a clear owner and a verifiable control path, while distributed custody often introduces handoffs that dilute responsibility and create gaps in oversight. That is why it matters for Non-Human Identity programs, API key management, and AI Agent operations that rely on multiple platforms, controllers, or service providers. The most common misapplication is treating fragmented operational handling as a substitute for ownership, which occurs when teams assume the presence of a process means a clear custodian exists.

Examples and Use Cases

Implementing distributed custody rigorously often introduces coordination overhead, requiring organisations to weigh resilience and separation of duties against slower remediation and more complex audits. The result is stronger control only when every handoff remains visible and enforceable.

• A cloud application team stores API keys in one platform, while a security team controls rotation policy in another, leaving no single party able to prove end-to-end custody.
• A third-party processor handles customer data, but the originating organisation retains logging and access review obligations, creating a shared custody model that must be contractually and technically mapped.
• An AI Agent is allowed to invoke tools through separate orchestration, vault, and approval layers, so custody of its Secrets and permissions is split across operational owners.
• A CI/CD pipeline moves service account credentials between build, test, and release systems, and each layer enforces partial controls without a unified revocation path.

In these situations, the guidance in the Ultimate Guide to NHIs is especially relevant because fragmented custody often correlates with weak visibility, delayed rotation, and unclear offboarding. For organisations aligning governance to the NIST Cybersecurity Framework 2.0, the operational question is not just where data lives, but who can prove custody at every point in its lifecycle.

Why It Matters in NHI Security

Distributed custody becomes dangerous when teams assume someone else owns classification, protection, or revocation. That is how secrets end up in code repositories, access reviews stall, and offboarding never fully closes the loop. In the NHI domain, the risk compounds because machine identities often outnumber human identities and are embedded in workflows that span cloud services, SaaS platforms, and internal automation. NHI Mgmt Group research shows that only 5.7% of organisations have full visibility into their service accounts, which makes fragmented custody especially hard to govern. The same problem shows up in rotation and recovery, where delay increases exposure and weakens containment, as described in the Ultimate Guide to NHIs.

This is also where governance becomes operational, not theoretical. The need for distributed custody controls aligns with NIST Cybersecurity Framework 2.0 because accountability, protection, and recovery all depend on knowing which party can act, when, and under what authority. Organisations typically encounter the cost of distributed custody only after a leaked secret, failed audit, or compromised service account forces them to reconstruct ownership after the fact, at which point custody becomes operationally unavoidable to address.

Related resources from NHI Mgmt Group

• How should security teams govern distributed SaaS without slowing the business down?
• Why do distributed SaaS environments create NHI risk?
• When does distributed SaaS become a security problem?
• When does distributed cloud create more access risk than flexibility?