Why do unmanaged apps and machine identities increase identity risk?

Why This Matters for Security Teams

Unmanaged apps and machine identities are not edge cases anymore; they are often the control plane that lets production systems, pipelines, integrations, and third-party services operate at speed. When those identities are outside standard joiner-mover-leaver processes, access can outlive the business need, and monitoring often misattributes activity to the application instead of the actor behind it. That creates blind spots in detection, review, and revocation.

This is why NHI governance is now a core identity issue, not a niche infrastructure concern. NHI Management Group has noted that only 5.7% of organisations have full visibility into their service accounts in the Ultimate Guide to NHIs, which helps explain why unmanaged identities persist so easily. The NIST Cybersecurity Framework 2.0 pushes teams toward explicit asset and access governance, but unmanaged workloads still evade the intended lifecycle controls. In practice, many security teams encounter misuse only after secrets leak, service accounts are overprivileged, or an integration is repurposed without review.

How It Works in Practice

Unmanaged apps and machine identities increase risk because they often authenticate with static secrets, broad permissions, and weak ownership. A service account, API key, certificate, or token may be embedded in code, stored in a config file, or issued once and then forgotten. If that identity is not enrolled in a central lifecycle, there is no reliable point for approval, rotation, review, or offboarding.

Good practice starts by inventorying all non-human identities, assigning ownership, and linking each identity to a defined workload or business function. The goal is to replace informal trust with enforceable controls: short-lived credentials, scoped permissions, and continuous review. NHI Management Group’s Lifecycle Processes for Managing NHIs emphasises that rotation and revocation must be routine, not exceptional, because identity risk compounds when tokens remain valid long after the original use case ends.

Practitioners typically combine:

• Discovery of shadow IT, unmanaged scripts, and hard-coded secrets
• Central ownership for every machine identity and service account
• Least privilege using role design that reflects workload function, not convenience
• Automated secret rotation and expiry enforcement
• Monitoring that correlates identity use with application, host, and pipeline context

For implementation guidance, the NIST Cybersecurity Framework 2.0 is useful for structuring governance, while the Ultimate Guide to NHIs — Key Challenges and Risks outlines how excessive privileges and poor visibility combine into persistent exposure. These controls tend to break down in CI/CD-heavy environments where identities are created dynamically, reused across many services, and never tied back to a clear owner.

Common Variations and Edge Cases

Tighter control often increases operational overhead, requiring organisations to balance fast delivery against stronger identity governance. That tradeoff becomes sharper in microservices, ephemeral containers, and third-party integrations, where teams may resist controls that appear to slow releases or break automation.

Best practice is evolving for these environments. Current guidance suggests treating unmanaged machine identities as a design defect rather than a cleanup task after deployment. For example, if a build pipeline can mint credentials, those credentials should be ephemeral and task-bound, not reusable across projects. If an application must integrate with external services, ownership and expiry should be explicit so revocation is feasible when vendors, scopes, or data paths change.

The most common failure mode is partial governance: some identities are in PAM or vault workflows while others remain embedded in scripts, cloud metadata, or partner-managed systems. NHI Management Group’s Regulatory and Audit Perspectives shows why that matters for evidence and accountability, and the Top 10 NHI Issues is a practical reminder that visibility gaps, stale secrets, and weak ownership routinely travel together. Organisations with high automation and weak inventory discipline are the most likely to miss these identities until a breach or audit forces discovery.

Related resources from NHI Mgmt Group

• Why do fragmented identity stacks create more risk for machine identities and AI agents?
• Why do shadow IT and unmanaged service accounts increase identity risk?
• Why do non-human identities increase cloud IAM risk so quickly?
• Why do Copilot deployments increase identity and data governance risk?