Who should be accountable for non-employee access reviews and removal?

The business sponsor should own accountability, with identity teams enforcing the control and maintaining evidence. Access reviews must verify that the relationship still exists, the entitlement still matches the work, and offboarding will happen when the relationship ends. Without that chain, lifecycle governance collapses into ticket handling.

Why This Matters for Security Teams

Non-employee access reviews fail when accountability is vague. Business sponsors understand why the access exists, while identity teams understand how to enforce it. If ownership sits only with IT, the review becomes a checkbox exercise that misses whether the contractor, vendor, or partner still has a valid business need. That gap is especially dangerous for non-human access, where service accounts and API keys can outlive the relationship that created them.

NHIMG’s Ultimate Guide to NHIs notes that only 20% of organisations have formal processes for offboarding and revoking API keys, which shows how often lifecycle ownership breaks down. The issue is not just access review cadence, but who is accountable for answering the key question: does this relationship still justify the entitlement? OWASP’s OWASP Non-Human Identity Top 10 reinforces that unmanaged NHI access is a security control failure, not an administrative nuisance.

In practice, many security teams encounter retained third-party access only after a vendor contract has ended or a dormant integration has already been abused.

How It Works in Practice

The most reliable model is split accountability. The business sponsor owns the decision, because that person can confirm whether the work still exists and whether the access is still needed. Identity, IAM, or security operations teams enforce the review workflow, evidence capture, and removal action. This separation matters because the control is about business necessity, not just technical presence.

For non-employee identities, the review should verify three things: the relationship still exists, the entitlement still matches the job or service function, and a revocation path is defined if the relationship ends. That applies to human contractors and external partners, but it also applies to machine identities, where the “relationship” may be a system integration, workload, or automation chain. The NHI Lifecycle Management Guide is useful here because lifecycle ownership is what turns access review from a periodic audit into an operational control.

Practitioners usually make this work by combining business attestation with technical enforcement:

• Business sponsor attests to continued need and risk acceptance.
• Identity team validates the account, entitlement, and last-use data.
• Security or IAM executes removal for expired access, with evidence retained.
• Offboarding triggers are tied to HR, procurement, vendor management, or automation change events.

This aligns with the OWASP Non-Human Identity Top 10 and the broader control logic in NHI governance: access should not survive the business reason for its existence. These controls tend to break down in multi-owner SaaS estates where no single sponsor controls the upstream contract, downstream entitlement, and deprovisioning path.

Common Variations and Edge Cases

Tighter accountability often increases administrative overhead, requiring organisations to balance clean ownership against the reality of matrixed vendors, shared platforms, and delegated administration. In mature environments, that tradeoff is worth it because it prevents orphaned access; in immature ones, it can slow reviews unless the process is automated and narrowly scoped.

There is no universal standard for exactly how often non-employee access should be re-certified, but current guidance suggests the cadence should reflect risk, privilege level, and data sensitivity. A privileged partner account may need faster review than a low-risk read-only integration. For machine access, a sponsor may be the product owner, system owner, or service owner rather than a person in HR or procurement.

One common edge case is outsourced operations, where the vendor’s internal staff changes but the contractual relationship remains active. Another is shared service accounts, where multiple teams rely on the same credential and accountability becomes blurred. NHIMG’s 52 NHI Breaches Analysis shows why that matters: when ownership is unclear, removal lags behind risk. NIST’s AI Risk Management Framework is also relevant where automation or agentic systems request access on behalf of a business process, because accountability must still land with a named owner, even if the requester is not human.

The practical test is simple: if no business sponsor can defend the access, the entitlement should be removed.

Related resources from NHI Mgmt Group

• How should security teams run access reviews for non-human identities?
• Who should own cleanup when non-employee access is no longer needed?
• What do security teams get wrong about non-employee access governance in healthcare?
• How should security teams govern non-human identities that have persistent access?