How should security teams inventory NHIs across product development environments?

Teams should inventory NHIs across source code, CI/CD pipelines, collaboration tools, cloud platforms, vaults, and on-prem systems, then normalize each identity by owner, purpose, and privilege. A useful inventory is not just a list of secrets, but a map of where each credential exists and what it can reach.

Why This Matters for Security Teams

Product development environments create NHIs faster than most teams can track them. Source repositories, build runners, test harnesses, chatops, cloud sandboxes, and temporary vault entries all generate identities that can reach production data if the boundary between environments is weak. The problem is not just volume; it is drift, where a credential begins as a harmless test token and later becomes a reused path into higher-value systems.

That is why inventory is a security control, not an administrative task. NIST’s NIST Cybersecurity Framework 2.0 treats visibility and asset understanding as a prerequisite for risk management, and NHI guidance from NHI Management Group shows how often secrets hide outside vaults in code, config files, and CI/CD tooling. The Ultimate Guide to NHIs notes that 96% of organisations store secrets outside dedicated secrets managers, which means inventory efforts must look beyond formal registries.

Security teams that only count vault entries miss the identities embedded in automation and collaboration tools. In practice, many security teams discover that an “internal-only” token reached production after a deployment failure, rather than through intentional inventory.

How It Works in Practice

A usable inventory starts by scanning every development surface where NHIs can appear: repositories, CI/CD variables, build logs, package registries, ticketing systems, chat integrations, container definitions, cloud IAM, and on-prem automation. The goal is to map each identity to three anchors: owner, purpose, and privilege. That gives the team a searchable record of what the credential is for, where it lives, and what it can touch.

Current guidance suggests combining discovery methods rather than relying on one tool. Secret scanning can find hard-coded keys, cloud inventory can expose service accounts, and audit logs can reveal dormant identities that still authenticate. The Top 10 NHI Issues research is useful here because it shows how rotation gaps and over-privilege often coexist with poor visibility. The operational pattern is to tag each NHI with environment, system owner, creation source, expiration, and dependencies, then reconcile duplicates and stale entries weekly.

For teams looking for a practical control set, NIST CSF 2.0 helps structure the work as identify, protect, detect, and respond, while CSA guidance on zero trust and identity governance reinforces that inventories must support revocation, not just reporting. Security teams should also treat source control history as a live exposure surface because deleted secrets often remain recoverable in commits, forks, and build artifacts.

• Inventory credentials by location, not just by account name.
• Link each NHI to an owning team and an approved use case.
• Record privilege scope and downstream systems reached.
• Flag secrets that exist in more than one place.
• Mark short-lived tokens separately from long-lived credentials.

These controls tend to break down when development and production share the same identity pools because inherited access makes ownership and blast radius difficult to separate.

Common Variations and Edge Cases

Tighter inventory discipline often increases operational overhead, requiring organisations to balance completeness against developer friction. That tradeoff is real in fast-moving product teams, especially when ephemeral environments spin up and disappear within minutes.

One common edge case is tooling that does not expose a clean identity object, such as webhook secrets, connector tokens, or pipeline-scoped variables. In those cases, current guidance suggests inventorying the container or system that holds the secret, then linking it to the action it enables. Another wrinkle is shared service accounts across multiple environments. Those accounts should be treated as higher risk because ownership becomes ambiguous and privilege reviews lose precision. The NHI Management Group definition of NHIs is useful for distinguishing the identity itself from the secret material attached to it.

Another exception is third-party integration sprawl. The 52 NHI Breaches Analysis shows how often exposed automation paths are involved when vendors, developers, and platforms all touch the same token. In those cases, inventory must include external trust relationships and not just internal assets. The standard answer also breaks down where teams lack authoritative ownership data, because no inventory can stay accurate if service creation is self-service and offboarding is manual.

Best practice is evolving, but the direction is clear: build an inventory that is continuously reconciled, environment-aware, and tied to revocation workflows rather than a static spreadsheet.

Related resources from NHI Mgmt Group

• How should security teams govern cloud IAM across hybrid environments?
• How should security teams govern certificate visibility across distributed environments?
• How should security teams manage SSL certificate sprawl across large environments?
• How should security teams implement continuous identity discovery across hybrid environments?