Topic starter
06/11/2026 6:55 pm
TL;DR: Long-lived cloud credentials create the most persistent vendor-risk pattern, especially when policies drift or secrets are shared, according to Twingate. Practitioners should treat vendor access as a scoped identity relationship with strict expiry, auditability and revocation.
Editorial analysis by NHI Mgmt Group, based on content published by Twingate: “Least Privilege for BYOC: Securing Vendor Access”.
Key questions
Q: Why do long-lived access keys increase risk in cloud environments?
A: Long-lived keys create standing access that is easy to reuse, hard to govern, and difficult to revoke at scale.
Q: How does workload identity federation work in Microsoft Entra ID?
A: Workload identity federation in Microsoft Entra ID lets an external workload exchange a trusted external token for an Entra access token without a stored secret.
Q: How should teams govern vendor access in BYOC environments?
A: Teams should govern BYOC vendor access as a full identity lifecycle, not a one-time integration.
Practitioner guidance
- Define vendor access as a revocable identity relationship Assign each vendor workload a named owner, expiry condition and revocation path so the access ends when the operational need ends.
- Replace shared secrets with federated workload identity Use OIDC or workload identity federation where the vendor can prove the calling workload cryptographically instead of storing a reusable cloud key.
- Scope every vendor role to one capability Separate ingestion, transformation, support and write-back into different roles so no single vendor identity can act across unrelated functions.
Bottom line: BYOC vendor access fails when a temporary integration is treated like a durable entitlement, because the access path then outlives the business purpose.
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06/11/2026 6:56 pm
BYOC access is now a lifecycle problem, not just a policy problem. The article's core point is that vendor-operated software inside customer cloud accounts needs explicit ownership from grant to revocation. A trust relationship that is never reviewed eventually behaves like standing privilege, even when it began as a temporary integration. Practitioners should govern vendor access as a managed identity lifecycle, not a one-time onboarding event.
A few things that frame the scale:
- 97% of NHIs carry excessive privileges, increasing unauthorised access and broadening the attack surface, according to the Ultimate Guide to NHIs.
- More than 95% of infrastructure-as-a-service accounts use less than 3% of the entitlements they are granted, according to Gartner.
A question worth separating out:
Q: What is the difference between cross-account roles and federated credentials?
A: Cross-account roles are permissions in one cloud account that can be assumed by a principal from another account, usually through a trust policy and temporary credentials. Federated credentials let an external identity provider authenticate a human or workload and exchange that trust for short-lived access, often via SAML or OIDC. The first is account-to-account delegation, the second is identity federation.
👉 Read our full editorial: BYOC vendor access needs federation, not standing cloud keys