Cloud NHI ownership is the missing control in identity governance

At a glance

What this is: This analysis argues that cloud NHI ownership is the control that determines whether service accounts, automation scripts, and API tokens remain governable or become orphaned attack paths.

Why it matters: It matters because IAM, PAM, and NHI programmes cannot enforce least privilege, recertification, or offboarding when no accountable owner exists for the identity.

By the numbers:

• Service accounts, automation scripts, and API tokens may outnumber human identities by more than 50:1.

👉 Read Silverfort's analysis of cloud NHI ownership and orphaned access

Context

Cloud environments are already populated by far more machine identities than people, which means ownership has become a first-order governance issue rather than an administrative detail. The problem is not simply how many NHIs exist, but whether any team is accountable for the permissions, usage, and retirement of each one.

When ownership is missing, identities drift into orphaned status. They keep access after the original project, pipeline, or integration changes, and that creates a control gap across NHI governance, lifecycle management, and access review processes.

Key questions

Q: What breaks when cloud NHIs do not have a named owner?

A: Without a named owner, a cloud NHI cannot be reliably reviewed, revoked, or investigated when something goes wrong. The result is orphaned access with no clear accountability for permissions, usage, or retirement. That is where machine identities become attacker-friendly, because active access persists even when nobody can justify why it still exists.

Q: Why do unowned service accounts increase compromise risk in cloud environments?

A: Unowned service accounts increase risk because they often retain permissions after the original business need has ended, and nobody is assigned to notice. They can continue to authenticate, move data, and call internal services while slipping past human-focused review processes. The security problem is not just access, but access without responsibility.

Q: How do security teams know if NHI ownership controls are working?

A: Ownership controls are working when every live NHI has a responsible team, a current business purpose, and a clear retirement path. You should see fewer orphaned accounts, faster revocation when systems are decommissioned, and cleaner access reviews. If any live identity cannot be assigned to an accountable owner, the control is failing.

Q: Who should be accountable when an orphaned NHI is found?

A: Accountability should sit with the team that created, operates, or depends on the identity, not with security alone. Security can enforce discovery and policy, but the business owner must validate necessity and approve removal or scoping changes. That separation keeps NHI governance operational rather than purely forensic.

Technical breakdown

Why orphaned cloud NHIs evade traditional access controls

Orphaned NHIs are machine identities that continue to exist after the person, team, or system that created them no longer actively manages them. They are difficult to catch because they do not map cleanly to human joiner-mover-leaver processes, and they often sit outside the visibility path used for employee access reviews. In practice, an orphaned service account can still authenticate, call APIs, and move data while no one can confidently answer who approved it or who should revoke it. That creates a governance blind spot, not just an inventory problem.

Practical implication: build ownership as a mandatory attribute in NHI discovery and review workflows.

How over-permissioned service accounts become attacker leverage

A machine identity with broad permissions becomes useful to an attacker because it can be reused silently across workloads, storage, and internal services. Unlike a human account, it may not trigger familiar behavioural checks, and if its scope was granted for convenience rather than need, the blast radius is already too large. The core failure is not only exposure, but the combination of persistence and unchecked entitlement growth. Once an identity is both active and unowned, the attacker does not need to create access. They only need to find it.

Practical implication: tie each NHI to least-privilege scoping and remove access that no named owner can justify.

Why lifecycle offboarding is the control that closes the gap

NHI lifecycle control is the process of reviewing whether an identity is still needed, who depends on it, and when it should be retired. That matters because cloud credentials often outlive the system or workflow that originally required them. If offboarding is not explicit, the identity remains active even after the business need disappears, which is why so many forgotten accounts become live security liabilities. Lifecycle management is therefore an operational control, not a paperwork exercise.

Practical implication: require expiry, ownership reassessment, and revocation triggers for every non-human identity.

Threat narrative

Attacker objective: The attacker wants durable access to cloud resources through an identity that nobody is actively monitoring or prepared to revoke.

1. Entry begins with an orphaned service account, API token, or automation identity that remains active after its owner or original use case has disappeared.
2. Escalation occurs when that identity still carries broad permissions, allowing an attacker or internal misuse path to reach cloud storage, databases, or internal services.
3. Impact follows when the identity is used without clear accountability, making compromise harder to detect and slowing containment and revocation.

Breaches seen in the wild

• Salesloft OAuth token breach — hackers stole OAuth tokens to access Salesforce data via Salesloft.
• Cisco DevHub NHI breach — IntelBroker exploited exposed Cisco credentials, API tokens and keys in DevHub.

Read our 52 NHI Breaches Analysis report for a comprehensive view of breaches impacting Non-Human Identities including AI Agents.

NHI Mgmt Group analysis

Ownership is the governance primitive that makes machine identity manageable. An NHI without a named owner cannot be meaningfully recertified, offboarded, or monitored with consistent accountability. That is why cloud NHI ownership is not a documentation preference but a structural dependency for IAM, PAM, and NHI governance. The practitioner conclusion is simple: if ownership is missing, the identity is already outside effective control.

Orphaned NHI is a failure mode, not an edge case. The article reflects a broader pattern in which machine identities outlive the workflows that created them, yet retain their access. That is exactly how privilege creep becomes persistent across cloud and SaaS estates. The practitioner conclusion is that identity lifecycle controls must be designed for service accounts and tokens, not borrowed from human access processes.

Standards-based NHI governance has to start with discoverability and accountability. OWASP NHI guidance is relevant because overexposure often begins with hidden identities and ends with unreviewed permissions. NIST CSF also applies because asset visibility, access control, and governance depend on knowing what exists before you can secure it. The practitioner conclusion is that discovery without ownership mapping is incomplete security.

Cloud NHI ownership should be treated as an operational control surface. When no team owns an identity, nobody can validate whether its permissions still match the task, dependency, or environment. That creates the exact condition attackers seek: active access with no monitoring, no review cadence, and no clear revocation path. The practitioner conclusion is to make ownership enforceable in the lifecycle, not optional in the directory.

Identity blast radius grows when multiple systems share unmanaged NHIs. A single unowned account can become a shared dependency across applications, pipelines, and cloud services, which multiplies the damage if it is exposed or misused. That is why NHI governance must connect inventory, entitlement scope, and retirement decisions in one control model. The practitioner conclusion is to reduce shared machine access before it becomes shared exposure.

From our research:

• 91% of former employee tokens remain active after offboarding, leaving organisations vulnerable to potential security breaches, according to The 2025 State of NHIs and Secrets in Cybersecurity.
• 62% of all secrets are duplicated and stored in multiple locations, causing unnecessary redundancy and increasing the risk of accidental exposure.
• If you are mapping ownership and offboarding gaps, start with Ultimate Guide to NHIs for the lifecycle controls that turn discovery into governance.

What this signals

Orphaned access will remain a core NHI governance failure until ownership becomes enforceable, not optional. Discovery tools can surface identities, but programme maturity depends on whether each one can be assigned, reviewed, and retired by a responsible team. The control gap is now less about visibility and more about accountability across the lifecycle.

Cloud teams should expect NHI lifecycle issues to surface first in shared automation and CI/CD paths. Those are the places where service accounts and tokens tend to outlive their original purpose while retaining broad permissions. The practical response is to link decommissioning events to access review triggers before orphaned access becomes the default state.

Ownership mapping becomes more valuable when paired with baseline guidance from the OWASP Non-Human Identity Top 10. The category is moving toward a model where hidden identities, excess privilege, and unclear accountability are managed as one governance problem. Teams that treat ownership as an afterthought will keep rediscovering the same exposure in different systems.

For practitioners

• Require named ownership for every NHI Make owner, business purpose, and dependency a mandatory field in NHI inventory and access review workflows. Reject any identity that cannot be tied to a responsible team or system before the next certification cycle.
• Block orphaned identities from passing review Treat unknown ownership as a review failure, not a pending exception. Escalate identities with no clear owner, no current dependency, or no active usage into a remediation queue with a removal deadline.
• Link lifecycle events to revocation triggers Tie project closure, pipeline decommissioning, and application retirement to automatic reassessment of service accounts and API tokens. If the system no longer exists, the credential should not remain active by default.
• Measure active-to-owned identity ratio Track how many live NHIs have a named owner versus how many are still orphaned. Use that ratio as a governance metric alongside rotation, privilege scope, and access review completion.
• Prioritise review of shared high-privilege NHIs Start with identities used by more than one application or automation path, since shared access creates the widest compromise surface. Remove unnecessary reuse before tightening the remaining entitlements.

Key takeaways

• Cloud NHI ownership is the difference between governable access and orphaned exposure.
• Former employee and unused machine credentials remain a durable risk because they often outlive the systems that created them.
• Security teams should make ownership, lifecycle triggers, and revocation accountability mandatory controls for every live NHI.

Key terms

• Orphaned NHI: A non-human identity with no clearly responsible owner, team, or system to manage it. Orphaned NHIs often remain active after the original use case ends, which makes them difficult to review, monitor, or revoke and turns them into persistent security liabilities.
• NHI Ownership: The accountability link between a non-human identity and the person, team, or system responsible for its use, review, and retirement. Ownership is what makes lifecycle governance possible because it gives security teams a place to direct questions, remediation, and revocation decisions.
• Identity Lifecycle Management: The process of creating, reviewing, modifying, and retiring identities as business needs change. For NHIs, lifecycle management has to cover provisioning, scope changes, dependency changes, and offboarding, because machine identities often outlive the systems and projects that created them.

Deepen your knowledge

NHI governance, agentic AI identity, and machine identity lifecycle are core topics in our NHI Foundation Level course, the industry's only accredited NHI security programme. If you are responsible for identity security strategy or NHI governance in your organisation, it is worth exploring.

This post draws on content published by Silverfort: Cloud NHI ownership and the risk of orphaned identities. Read the original.