Access outlives the business need. That creates persistence in integrations, delegated workflows, and automation accounts long after the original project, role, or supplier relationship has changed. The practical risk is that service continuity begins to depend on credentials that nobody actively owns.
Why This Matters for Security Teams
Public-sector service identities are not just technical accounts. They often sit behind citizen services, inter-agency integrations, payment flows, case management, and scheduled automation. When lifecycle ownership is missing, those identities become durable access paths that outlive the business process they were created for. That creates a governance gap, not just an operational one.
The risk is compounded by the scale and persistence of non-human access. NHI Mgmt Group notes that lifecycle processes for managing NHIs are frequently incomplete, and its research cites that only 20% of organisations have formal processes for offboarding and revoking API keys. The broader issue is visible in guidance such as the OWASP Non-Human Identity Top 10, which treats unmanaged service identities as a direct security weakness, not an administrative inconvenience.
In public-sector environments, the failure mode is especially severe because credentials may support legacy systems, procurement-delivered integrations, and cross-boundary workflows that no single team actively owns. In practice, many security teams encounter identity sprawl only after a renewal, staffing change, or supplier exit has already left live access behind.
How It Works in Practice
Lifecycle management starts with knowing where each service identity is used, why it exists, who owns it, and when it should be retired. That means treating service accounts, API keys, certificates, and automation tokens as governed assets with creation, review, rotation, and revocation steps. The NHI Lifecycle Management Guide and the Static vs Dynamic Secrets section both reinforce the same operational principle: long-lived credentials create avoidable persistence.
In practice, effective programs usually include:
- Named business and technical owners for every service identity.
- Inventory linking each identity to a system, workflow, vendor, or contract.
- Expiry dates or review triggers tied to project end dates and supplier terms.
- Rotation and revocation procedures that are tested, not just documented.
- Removal checks during decommissioning, offboarding, and procurement exit.
For public-sector teams, this should be aligned to a broader identity governance model and Zero Trust thinking, as reflected in the NIST Cybersecurity Framework 2.0. The goal is to ensure the identity cannot continue working simply because no one remembered to shut it down. Where possible, short-lived credentials and tightly scoped access reduce the blast radius when integrations are compromised.
This guidance tends to break down in shared platform environments where multiple agencies, contractors, or managed service provider reuse the same service identity because ownership and dependency mapping are incomplete.
Common Variations and Edge Cases
Tighter lifecycle control often increases coordination overhead, requiring organisations to balance security assurance against operational continuity. That tradeoff is most visible in legacy public-sector estates, where systems may depend on hard-coded secrets, embedded certificates, or vendor-managed integrations that are difficult to replace quickly.
Best practice is evolving for these cases. There is no universal standard for every transition pattern, but current guidance suggests prioritising containment: isolate the identity, reduce privilege, shorten credential lifetime where possible, and establish a retirement plan with explicit deadlines. The Secret Sprawl Challenge is a useful reminder that unmanaged duplication often keeps old identities alive long after the original purpose ends.
One common edge case is emergency access for continuity-of-government scenarios. Those identities may legitimately remain available longer, but they still need ownership, logging, and periodic review. Another is supplier-hosted automation, where the service account may sit outside direct agency control. In those cases, contract language and exit controls matter as much as technical revocation.
NHI Mgmt Group’s research also shows the practical consequence of poor lifecycle discipline: regulatory and audit perspectives increasingly expect evidence that identities are not simply created and forgotten. Organisations that cannot prove retirement and recertification are likely to carry hidden access for months or years.
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 CSA MAESTRO address the attack and risk surface, while NIST CSF 2.0 and NIST AI RMF set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-03 | Lifecycle and rotation failures are a core NHI weakness. |
| NIST CSF 2.0 | PR.AC-1 | Access should be approved, managed, and removed through its lifecycle. |
| NIST AI RMF | Governance must address persistent identity risk across the full AI and system lifecycle. | |
| CSA MAESTRO | Agentic and automated workloads need lifecycle controls for their identities. |
Use AI RMF governance to assign ownership, review access, and track retirement of automated identities.
Related resources from NHI Mgmt Group
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on July 9, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
