What do security teams get wrong about vendor consolidation?

Why This Matters for Security Teams

Vendor consolidation changes the attack surface, not just the contract count. When teams reduce the number of platforms without redesigning identity governance, they often create larger blast radiuses, more persistent trust paths, and weaker accountability across service accounts, API keys, and third-party integrations. The risk is especially visible in environments where one vendor now brokers access across many systems, because compromise of that control plane can expose far more than the original tools.

Current guidance from the NIST Cybersecurity Framework 2.0 emphasizes governance, asset visibility, and risk management as ongoing functions, not one-time procurement outcomes. That matters because consolidation is often sold as simplification, while the underlying identities and entitlements become harder to inspect. NHIMG research shows that only 5.7% of organisations have full visibility into their service accounts, and 97% of NHIs carry excessive privileges, which is exactly the kind of hidden sprawl consolidation can mask rather than fix. The same pattern appears in third-party access, where the State of Non-Human Identity Security highlights a major confidence gap and poor visibility into OAuth-connected vendors.

In practice, many security teams discover that consolidation reduced software licences but increased identity concentration only after a vendor integration, credential leak, or offboarding failure has already affected production.

How It Works in Practice

Consolidation is only safe when identity controls are redesigned alongside the platform strategy. The question is not how many vendors remain, but whether each retained vendor is governed with explicit trust boundaries, least privilege, and lifecycle controls. The practical shift is from procurement-led reduction to identity-led control.

That usually means inventorying every non-human identity tied to the vendor stack, including service accounts, tokens, certificates, OAuth grants, and automation credentials. Then each identity should be mapped to an owner, a business purpose, a scope, and a revocation path. Where consolidation introduces a shared platform, the platform itself must be treated as a high-value identity broker with its own access rules, logging, and offboarding procedures. NHIMG’s Ultimate Guide to NHIs — The NHI Market is useful here because it frames NHIs as a governance problem across visibility, rotation, and offboarding, not just a secrets-storage problem.

Practitioners usually look for four controls:

• Unified inventory of all vendor-issued and vendor-connected NHIs
• Entitlement review for every retained integration, not just user access
• Automated offboarding and key revocation when contracts, scopes, or teams change
• Continuous logging so a consolidated platform cannot become a blind spot

For implementation, the CISA Zero Trust Maturity Model is a strong operational reference because it pushes teams toward explicit verification and segmented trust. That aligns with the SPIFFE model for workload identity, where the system proves what the workload is before access is granted. These controls tend to break down when a consolidated vendor platform still allows shared admin roles, long-lived API keys, and opaque subprocessor access because revocation and attribution become too slow to match the pace of change.

Common Variations and Edge Cases

Tighter consolidation often increases operational dependency, requiring organisations to balance lower tool sprawl against higher concentration risk. That tradeoff becomes sharper when the retained vendor is embedded in authentication, CI/CD, cloud access, or helpdesk automation, because a single failure can affect multiple control planes at once.

There is no universal standard for how much concentration is acceptable, but current guidance suggests treating the retained platform as a critical trust boundary rather than a convenience layer. If multiple business units share the same vendor, teams should avoid assuming inherited trust is acceptable; every integration still needs its own entitlement review and revocation path. This is especially important where third-party OAuth is involved, because vendor-to-vendor access is frequently invisible to standard access reviews. The State of Non-Human Identity Security is relevant here because it shows how poor visibility into third-party connections undermines confidence in the entire model.

Edge cases also include M&A environments, where consolidation is used to force standardisation before identity cleanup has occurred, and regulated environments, where contract rationalisation cannot outrun auditability requirements. Best practice is evolving, but a safe rule is simple: if the organisation cannot explain who owns each retained NHI, how it is rotated, and how quickly it can be revoked, the consolidation is incomplete.

Related resources from NHI Mgmt Group

• What do security teams get wrong about self-service app requests?
• What do security teams get wrong about ITSM and access governance?
• What do security teams get wrong about role explosion?
• What do security teams get wrong about asset management and access governance?