Standing credentials keep access open longer than necessary, which increases the window for misuse, credential theft, and accidental overreach. Just-in-time approval narrows that window by granting access only after a request and only for a defined time and scope. For most organisations, that is a better fit for vendor access than permanent privileges.
Why standing credentials change the risk profile of third-party access
Standing credentials turn a vendor relationship into an always-on trust path. That is materially different from approval-based access because the credential remains useful even when no work is being performed, so the organisation must defend it continuously rather than only during a short access window. The practical effect is more exposure to misuse, harder revocation, and a larger blast radius if the credential is copied or shared.
That risk is amplified when third parties reuse the same access path across support tasks, troubleshooting, and production changes. A long-lived credential is not just a convenience issue, it becomes an enduring control assumption: if it is valid, it can be used, and if it is overprivileged, the damage can extend beyond the original request.
Long-lived credentials are also harder to govern at scale. NHIMG’s Ultimate Guide to NHIs treats lifecycle, rotation, offboarding, and third-party exposure as core control problems, and the same logic applies here when vendors hold persistent access.
Where just-in-time approval changes the operational model
Just-in-time approval does two things that standing credentials do not: it adds a gate before access starts, and it bounds the time and scope after access is granted. That means the organisation can align vendor access to a specific request, a specific system, and a specific period, rather than leaving a reusable path open indefinitely.
This matters most where access is privileged, production-facing, or difficult to monitor continuously. A time-bound grant is easier to reason about during audit, easier to terminate after the task, and easier to contain if the vendor session behaves unexpectedly. It also reduces the chance that stale access quietly accumulates as staff, contracts, or workflows change.
For the credential-management side of that problem, Static vs Dynamic Secrets is the most direct internal reference for understanding why ephemeral access is usually safer than long-lived secrets.
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, CIS Controls v8, NIST SP 800-63 and NIST Zero Trust (SP 800-207) set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-01 — Secrets and Credential Management | Standing vendor credentials create long-lived secret exposure and reuse risk. |
| NHI-03 — Least Privilege and Access Scope | Third-party access should be limited to the minimum scope and time needed. | |
| NHI-05 — Lifecycle and Revocation | JIT depends on timely expiry and revocation rather than permanent access paths. | |
| Recommendation — Replace standing vendor secrets with short-lived, tightly scoped credentials. Restrict vendor access to the minimum permissions required for the approved task. Enforce expiry and revocation for vendor access immediately after the approved window closes. | ||
| NIST CSF 2.0 | PR.AA — Identity Management, Authentication, and Access Control | The question is about how access is granted and bounded for third parties. |
| Recommendation — Use approval, authentication, and access controls to constrain third-party access. | ||
| CIS Controls v8 | 6 — Access Control Management | Vendor access is an access-control problem requiring least privilege and review. |
| Recommendation — Inventory, approve, and periodically review third-party access paths and permissions. | ||
| NIST SP 800-63 | IAL — Identity Assurance Level | JIT approval depends on trustworthy identity proofing before access is granted. |
| Recommendation — Verify the third party’s identity assurance before issuing time-bound access. | ||
| NIST Zero Trust (SP 800-207) | JIT — Just-in-Time Access | The question directly contrasts standing access with time-bound, on-demand access. |
| Recommendation — Grant access only when requested and keep it active only for the approved interval. | ||
Practitioner Guidance
What to verify: Decide whether the third party actually needs reusable access or only task-bound access. If the work can be requested, approved, and time-boxed, standing credentials are usually a stronger exposure than a control.
What to prioritise: Treat vendor access to production, admin functions, and sensitive data as the first candidates for JIT, because those are the cases where a copied or forgotten credential creates the largest downstream impact.
Common mistake: Teams often keep standing access because they are optimising for convenience or emergency support. That shortcut shifts the burden from access approval to continuous trust, and it usually becomes visible only after a review, a leak, or an overreach event.
Practitioner takeaway: The goal is not to make third-party access disappear, but to make it temporary, scoped, and attributable enough that a vendor cannot keep using a credential after the job it was issued for has ended.
Related resources from NHI Mgmt Group
- What happens when third-party access is granted without strong session control and auditability?
- What happens when ransomware-as-a-service affiliates gain access through a third party?
- What happens when attackers gain access through valid credentials instead of stealing passwords directly?
- What happens when API access depends on third-party tokens or inherited credentials?
