They often treat vendor access as a procurement issue instead of an identity risk. Underwriters are looking for approval paths, recertification, expiry, and revocation evidence. If third-party credentials remain active after the relationship changes, the organisation has a governance gap that can affect both breach exposure and coverage outcomes.
Why This Matters for Security Teams
Insurance assessments do not treat vendor access as a simple procurement checkbox. They test whether third-party identities are approved, scoped, time-bound, reviewed, and revoked with evidence. That means the real question is not whether a vendor exists, but whether the organisation can prove control over every credential, token, and account tied to that vendor relationship. The risk is especially acute because third-party NHIs are often more numerous and less visible than human accounts, a pattern NHI Mgmt Group highlights in the Ultimate Guide to NHIs.
Underwriters and assessors usually care less about stated policy and more about operating evidence: approval workflow logs, recertification records, expiry settings, offboarding tickets, and revocation timestamps. That expectation aligns closely with the access governance emphasis in the OWASP Non-Human Identity Top 10, where unmanaged non-human access is treated as a primary exposure path. In practice, many security teams encounter vendor credential risk only after a contract changes, an integration is decommissioned, or a review request reveals that access was never actually removed.
How It Works in Practice
Strong vendor access governance starts by treating each external connection as an identity lifecycle problem, not a contract annex. Every vendor account, API key, service account, VPN credential, and support mailbox should have a named owner, a business purpose, a scope, an expiry date, and a revocation path. That is the operational baseline reflected in NHI guidance and in the broader control logic described by the 52 NHI Breaches Analysis, where stale or over-scoped non-human access repeatedly shows up as an incident multiplier.
For insurance assessments, the practical evidence package should show:
- pre-approved access paths for each vendor use case
- time-bounded credentials with expiration and renewal rules
- recertification at a defined cadence, not only at renewal
- offboarding triggers tied to contract termination, scope change, or inactivity
- revocation proof that includes date, system, and responsible approver
Where possible, organisations should prefer short-lived tokens, just-in-time access, and centrally managed secrets over shared static credentials. If a vendor must access internal systems, the assessable control is whether access can be issued and removed without manual chasing across multiple teams. The same principle is echoed in the OWASP Non-Human Identity Top 10, which treats dormant secrets and weak lifecycle control as governance failures, not merely hygiene issues. These controls tend to break down when vendors rely on shared break-glass accounts, because ownership, expiry, and revocation become ambiguous the moment the relationship changes.
Common Variations and Edge Cases
Tighter vendor controls often increase operational friction, so organisations must balance evidence quality against business speed. That tradeoff is real in claims systems, managed services, and outsourced support environments where vendors need occasional emergency access but not standing privileges. Current guidance suggests that emergency access should still be bound by approval, logging, and post-use review, even if the access path is faster than standard requests.
There is no universal standard for every vendor scenario yet, but assessors generally expect the organisation to explain why each exception exists and how it is contained. One common mistake is treating a vendor portal account as lower risk than a privileged administrator account when both can trigger sensitive actions. Another is assuming that a terminated contract automatically removes technical access. It rarely does unless identity and security workflows are integrated.
The strongest programs tie procurement, legal, IAM, and security operations into one offboarding process, so contract end dates and access revocation dates can be reconciled. That matters because the Ultimate Guide to NHIs shows that unresolved lifecycle gaps remain common across enterprises, and insurers tend to view those gaps as evidence of weak control maturity rather than isolated admin mistakes.
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 and NIST CSF 2.0 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-01 | Vendor access often fails at lifecycle ownership and revocation. |
| NIST CSF 2.0 | PR.AC-1 | Insurance assessments test whether third-party access is authorized and tracked. |
| NIST CSF 2.0 | PR.AC-4 | Least privilege is central when vendors retain broader access than needed. |
Require documented approval, review, and removal evidence for all vendor access paths.
Related resources from NHI Mgmt Group
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Reviewed and updated by the NHIMG editorial team on June 24, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
