They should treat every vendor account as a time-bound business dependency, not a permanent convenience. That means naming an owner, limiting scope to specific systems, logging all use, and revoking access when support, implementation, or contract activity ends. If the access cannot be justified in a review, it should not remain active.
Why This Matters for Security Teams
Vendor access to EHR and telehealth systems is not a courtesy account problem. It is a third-party identity governance problem with patient data, clinical continuity, and billing integrity at stake. Rural healthcare teams often rely on vendors for patching, integrations, and device support, but each exception expands the blast radius if access is left standing after the work ends. Guidance from the NIST Cybersecurity Framework 2.0 and the Ultimate Guide to NHIs both point toward lifecycle control, visibility, and timely revocation as core requirements.
In practice, the biggest failure is not malicious vendor behaviour but operational drift: a remote support login becomes the default way to keep a system running, then survives contract changes, staff turnover, and audit cycles. NHIMG research notes that 92% of organisations expose NHIs to third parties, which shows how common this exposure is when it is treated as normal rather than exceptional. In practice, many security teams encounter over-permissioned vendor access only after an audit finding or a clinical incident forces a cleanup.
How It Works in Practice
Governance starts by treating every vendor account as a named business dependency with an owner, a purpose, and an expiration date. The account should be tied to a specific system or function, such as EHR support, telehealth troubleshooting, interface maintenance, or device telemetry, rather than broad network reach. The OWASP Non-Human Identity Top 10 and NHIMG’s lifecycle guidance both reinforce the same operational pattern: provision narrowly, monitor continuously, and remove access when the dependency ends.
- Assign a business owner in the healthcare team, not just an IT contact.
- Scope access to the minimum systems, environments, and time window needed.
- Use separate accounts for production support, testing, and remote administration.
- Require strong authentication, session logging, and ticket or change reference for each use.
- Review active vendor accounts on a fixed schedule and after every contract, renewal, or scope change.
- Revoke credentials immediately when support ends, the contract expires, or the vendor no longer has a justified need.
For rural environments, the practical control is often not full automation but consistent evidence: who approved the access, why it exists, what it can reach, and when it will be removed. That aligns with the control discipline described in Top 10 NHI Issues and the logging expectations in NIST SP 800-53 Rev 5 Security and Privacy Controls. These controls tend to break down when a vendor must support multiple legacy platforms through shared credentials because attribution and revocation become ambiguous.
Common Variations and Edge Cases
Tighter vendor control often increases administrative overhead, requiring rural organisations to balance clinical uptime against access friction. That tradeoff is real when a small IT staff must support after-hours outages, rural telehealth expansion, or biomedical devices that only one supplier can service. Current guidance suggests using time-bound access and just-enough privilege rather than allowing standing access “just in case,” but there is no universal standard for every vendor scenario.
Shared vendor portals, emergency break-glass support, and managed service providers introduce exceptions that need documented compensation controls. In those cases, the safest pattern is a named sponsor, a short review interval, and a separate emergency process with alerting and post-event review. The NHIMG regulatory and audit perspective is especially useful here because it frames access review as evidence, not paperwork. If the organisation cannot explain why a vendor still has access, the access should be removed and reissued only when a new need is proven.
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-01 | Vendor accounts are non-human identities that need narrow scope and lifecycle control. |
| NIST CSF 2.0 | PR.AA-01 | Third-party access should be authenticated and tied to justified business need. |
| NIST AI RMF | GOVERN | Accountability and oversight are required for third-party access decisions. |
| CSA MAESTRO | T5 | Agent and service access should be bounded by mission context and revocation rules. |
Inventory every vendor NHI, assign ownership, and remove standing access that lacks a current business need.
Related resources from NHI Mgmt Group
- How should public-sector teams govern access across legacy systems and cloud services?
- How should security teams govern non-human identities that have persistent access?
- How should security teams govern API keys used for generative AI access?
- How should healthcare teams govern AI agents that access clinical systems?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on July 11, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org