Why do technology silos create identity risk?

Why This Matters for Security Teams

Technology silos turn identity into a coordination problem instead of a control problem. When platform teams, application owners, and security operations each hold partial inventory, the organisation loses the ability to answer basic questions quickly: who issued the secret, where it is used, whether it is still needed, and how fast it can be revoked. That gap is especially dangerous for NHIs, where service accounts and API keys often outlive the systems that created them. Current guidance from NIST Cybersecurity Framework 2.0 emphasises governance and asset visibility, but silos make both harder to execute in practice.

NHI Management Group’s Ultimate Guide to NHIs notes that only 5.7% of organisations have full visibility into their service accounts, which explains why identity risk often hides until an incident forces discovery. The problem is not simply duplication of tooling. It is that each silo creates its own lifecycle assumptions, so rotation, offboarding, and privilege review drift apart. In practice, many security teams encounter compromised secrets only after an incident response exercise exposes how many systems were never linked in the first place.

How It Works in Practice

Identity risk grows when each domain optimises for local efficiency. Architecture may embed credentials in deployment pipelines, operations may manage access through ad hoc exceptions, and security may see only a fragment of the overall entitlement picture. That fragmentation weakens every stage of the lifecycle: creation, storage, rotation, monitoring, and revocation. The result is not just more accounts, but more orphaned access, more duplicated privileges, and more secrets that remain valid long after the owning team has moved on.

For NHIs, a practical response starts with a shared inventory and a single ownership model. Teams should classify every service account, API key, token, and certificate by system, purpose, owner, and expiration. From there, controls need to move from static review cycles to operational enforcement. The Ultimate Guide to NHIs highlights why this matters: 71% of NHIs are not rotated within recommended time frames, and 97% carry excessive privileges. Those two conditions are amplified when one team manages creation and another team manages cleanup.

Security teams should align on a few practical steps:

• Build one authoritative inventory for NHIs, with ownership and business purpose attached.
• Standardise secret storage so credentials are not scattered across code, config files, and CI/CD tooling.
• Use short-lived credentials where possible, and revoke access automatically when the task ends.
• Route exception handling through one review path so temporary access does not become permanent access.
• Correlate identity telemetry across build, runtime, and access layers to spot unused or duplicated access.

When these controls are combined with policy enforcement at runtime, teams can reduce drift between systems. The NIST Cybersecurity Framework 2.0 is useful here because it frames identity as an enterprise governance issue, not just an access management task. These controls tend to break down when engineering teams create machine identities faster than governance can assign ownership, because shadow credentials accumulate outside the approved process.

Common Variations and Edge Cases

Tighter central control often increases delivery overhead, requiring organisations to balance governance against release speed. That tradeoff becomes visible in platform engineering, mergers, and legacy estates, where a single identity model may be unrealistic in the short term. Best practice is evolving here: there is no universal standard for how quickly every silo should be collapsed, but there is broad agreement that disconnected ownership is itself a risk.

Some environments need transitional patterns rather than immediate consolidation. For example, a mature CI/CD platform may support automated secret issuance, while a legacy application still depends on a long-lived service account. In that case, the goal is not perfect uniformity. It is reducing the blast radius by tightening rotation, limiting scope, and assigning explicit ownership. The 52 NHI Breaches Analysis shows how often identity failures become operational incidents, which is why silo reduction should be paired with incident lessons learned rather than treated as a one-time cleanup.

External dependencies create another edge case. Third-party integrations often sit outside the main identity programme, but they still inherit the same exposure if credentials are shared across teams or environments. In those cases, current guidance suggests treating the integration as its own governed workload, with a named owner, revocation trigger, and audit trail. The main limitation appears in heavily decentralised organisations where each product team can procure and manage secrets independently, because no shared control plane exists to enforce consistent lifecycle policy.

Related resources from NHI Mgmt Group

• Why do secrets create disproportionate risk in NHI environments?
• When does shift left create more risk than it reduces?
• When does SSO create more risk than it reduces?
• Why do broad roles create more risk than they appear to save?