Prioritise it when access is fragmented across countries, devices, or business units, or when sensitive data depends on manual sharing. Access standardisation should come early because it creates a baseline for later controls such as monitoring, revocation, and least privilege. Without that baseline, other security work often remains inconsistent and difficult to sustain.
Why This Matters for Security Teams
Access standardisation is often the first practical step when identity controls are too fragmented to govern. If one business unit shares secrets in chat, another uses local scripts, and a third relies on inconsistent PAM or RBAC rules, later improvements such as revocation, monitoring, and least privilege never reach full coverage. That is especially true for NHIs, where hidden service accounts and API keys often outnumber humans by a wide margin. NHI Management Group’s Ultimate Guide to NHIs shows how widespread this visibility gap is, and the OWASP Non-Human Identity Top 10 frames it as a lifecycle problem, not just an access review problem.
The practical risk is that security teams try to improve “everything” at once and end up with controls that apply unevenly by region, system, or team. Standardisation creates a common access model, a common approval path, and a common place to enforce expiration and ownership. Without that baseline, organisations usually discover the gaps only after secrets have already spread across code, tickets, endpoints, and third-party integrations.
How It Works in Practice
Start by defining a small set of approved access patterns for the highest-risk resources: production data, administrative systems, CI/CD, and external integrations. The goal is not perfection on day one. The goal is to replace ad hoc sharing with repeatable mechanisms such as centrally managed identities, approved vaults, standard request workflows, and time-bound grants. For NHI-heavy environments, that usually means standardising how service accounts, API keys, certificates, and OAuth grants are issued, stored, reviewed, and revoked.
Current guidance suggests treating standardisation as a prerequisite for control consistency. NIST SP 800-53 Rev. 5 helps here because it separates access enforcement, least privilege, auditability, and credential management into control families that can be mapped once and applied repeatedly. That becomes much easier when the organisation has one identity source of truth and one revocation path. The NHI Mgmt Group’s Ultimate Guide to NHIs - Key Challenges and Risks is a useful reference for the operational failures that appear when secrets are duplicated, overexposed, or left without ownership.
- Inventory where access is created, copied, and shared, then eliminate duplicate pathways.
- Define one standard for each access type, such as JIT for privileged sessions or vault-issued secrets for workloads.
- Require ownership, expiry, and revocation for every grant, including non-human credentials.
- Use standard naming, logging, and review intervals so monitoring is comparable across teams.
This matters because monitoring, revocation, and least privilege all depend on consistent identity records and consistent issuance rules. These controls tend to break down when access is embedded in local scripts, unmanaged SaaS apps, or third-party OAuth connections because the organisation no longer has a single authoritative path for change.
Common Variations and Edge Cases
Tighter access standardisation often increases short-term delivery friction, so organisations have to balance speed against control maturity. That tradeoff is real in mergers, multi-country operations, and engineering-led environments where teams have historically owned their own tooling. Best practice is evolving, but there is no universal standard for this yet: some organisations standardise only crown-jewel systems first, while others begin with the most widely shared secrets because that is where risk concentrates fastest.
Edge cases also matter. Legacy platforms may not support modern workload identity, and some teams may still need temporary bridge controls while the standard is rolled out. In those cases, the priority is to reduce variation, not to force an ideal architecture immediately. The 52 NHI Breaches Analysis and Microsoft SAS Key Breach both show why unmanaged access paths can persist even after teams believe they have “added security.” Standardisation should therefore come before broader optimisation when the environment is fragmented, because fragmentation makes later improvements hard to measure, hard to enforce, and easy to bypass.
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 address the attack and risk surface, while NIST CSF 2.0, NIST AI RMF, NIST Zero Trust (SP 800-207) and NIST SP 800-63 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-01 | Addresses inconsistent NHI ownership and inventory that block standard access models. |
| NIST CSF 2.0 | PR.AC-1 | Access control standardisation is a prerequisite for consistent enforcement across environments. |
| NIST AI RMF | GOVERN | Governance is needed to make access standards repeatable, accountable, and measurable. |
| NIST Zero Trust (SP 800-207) | SC-2 | Zero Trust depends on standard identity and access signals before dynamic enforcement works well. |
| NIST SP 800-63 | IAL/AAL/FAL | Identity assurance concepts help standardize how credentials and auth strength are applied. |
Normalize identity signals first so Zero Trust policy can evaluate access consistently at request time.
Related resources from NHI Mgmt Group
- Should organisations prioritise AI agent access controls before broader NHI cleanup?
- When should organisations prioritise DLP compliance over broader data security improvements?
- How should organisations scope an identity and access governance programme before they start implementation?
- Why do organisations need identity security beyond basic access management?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on August 26, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
