Why do build systems and package registries matter to identity governance?

Build systems and package registries rely on service accounts, signing keys and deployment tokens that act with organisational authority. If those non-human identities are over-privileged or poorly inventoried, an attacker does not need to defeat application logic. They only need to abuse the trusted identities that move code into production.

Why Build and Registry Identities Are a Governance Problem

Build systems and package registries are not just delivery plumbing. They are identity-bearing control planes that sign artifacts, publish packages, promote releases, and invoke downstream infrastructure with organisational authority. That means a compromised service account, token, or signing key can turn a trusted pipeline into a distribution channel for malicious code. NIST’s Cybersecurity Framework 2.0 treats identity and access as a core governance concern, and that applies directly to software supply chains.

NHIMG research shows why this matters: the Ultimate Guide to NHIs reports that 97% of NHIs carry excessive privileges, 96% of organisations store secrets outside secrets managers, and 80% of identity breaches involve compromised non-human identities. In practice, package registries and CI/CD systems amplify those weaknesses because one credential often reaches many repositories, environments, or tenants.

The governance mistake is treating build access as a developer convenience issue instead of a production identity issue. Once a registry token or signing key is over-scoped, the attacker does not need application logic flaws, only the trusted path into release infrastructure. In practice, many security teams discover this only after a tampered package, poisoned build, or leaked deployment token has already reached production.

How Governance Works Across CI/CD, Signing, and Package Distribution

Effective identity governance for build systems starts with inventory: every builder, runner, package publisher, signing service, and promotion workflow should have a named owner, a purpose, a scope, and a revocation path. The practical goal is to reduce standing authority and make each identity verifiable at runtime. The Top 10 NHI Issues emphasises visibility, rotation, and least privilege because those controls are the difference between a controlled release path and an unbounded trust chain.

In mature environments, teams typically separate duties across at least four functions:

• build runners that fetch source and dependencies only
• signing identities that produce attestations or package signatures
• publishing identities that upload artifacts to registries
• deployment identities that promote already signed artifacts into environments

Each function should use short-lived credentials where possible, with JIT issuance tied to a job, commit, environment, or approval context. Static registry tokens and long-lived secrets are especially risky because they persist after the pipeline run, travel into logs and config, and are difficult to prove revoked. NIST SP 800-53 Rev. 5’s security and privacy controls support this approach through access enforcement, auditability, and key management expectations, while current guidance also favours workload identity and policy evaluation at request time rather than broad pre-issued access.

That is why build and registry governance must include secret scanning, artifact signing, provenance checks, and strict offboarding for tokens no longer in use. These controls tend to break down in legacy CI/CD estates where shared runners, inherited permissions, and embedded credentials make identity boundaries unclear.

Where the Risk Shows Up in Real Operations

Tighter build and registry controls often increase operational overhead, requiring organisations to balance delivery speed against verifiable trust. The biggest tradeoff is convenience versus blast-radius reduction: every additional automation shortcut tends to expand the number of identities that can publish or promote code. That is especially visible in open-source publishing, multi-tenant build farms, and third-party pipeline integrations.

Current guidance suggests treating package registries as part of the trust boundary, not as passive storage. A compromised publish token can inject malicious packages, but a mis-scoped read token can also reveal private dependencies, internal versioning, or sensitive metadata that helps an attacker target the next step. NHIMG case material such as the LiteLLM PyPI package breach and the JetBrains GitHub plugin token exposure illustrate how registry or tooling tokens can become launch points for wider compromise.

There is no universal standard for every build ecosystem yet, but the direction is clear: prefer workload identities over shared secrets, use short-lived credentials, separate publish from deploy authority, and require audit trails for every release action. Where organisations rely on long-lived service accounts, mirror registries, or cross-account automation without tight scoping, identity governance becomes brittle fast because one leaked token can operate across environments and suppliers.

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