Yes. Certificates, signing keys, and protocol choices are part of service identity and trust, so CBOM work sits at the intersection of identity governance, platform engineering, and security architecture. If the inventory lives only with a crypto specialist, ownership gaps will remain. Joint governance is the only way to keep the inventory accurate and actionable.
Why CBOM ownership belongs at the identity and platform boundary
A CBOM is not just a crypto inventory. It is an inventory of trust dependencies: which certificates exist, which signing keys protect them, which protocols and algorithms they rely on, and where those assets are consumed. That makes the subject larger than cryptography alone. Identity teams understand ownership, lifecycle, and governance; platform teams understand deployment reality, integration points, and operational drift.
The right operating model is joint ownership with clear task split, not shared vagueness. Identity can define policy, control standards, and review expectations, while platform teams can surface live dependencies from services, clusters, pipelines, and workloads. If either side works alone, the result is usually stale inventory, missing context, or controls that look strong on paper but fail in production.
A practical way to frame the boundary is to treat the CBOM as a trust map for service identity, not a static cryptography spreadsheet. That means ownership must extend beyond certificates to the systems that issue, store, deploy, rotate, and retire them. The inventory only becomes useful when the people who govern identity and the people who run platforms both trust and use it.
What joint governance has to cover for a CBOM to stay useful
Joint governance should answer four questions: what cryptographic material exists, who owns it, where it is used, and when it must change. The inventory should include certificate chains, signing keys, protocol dependencies, expiration horizons, and replacement paths. It should also show whether a dependency is human-managed, automated, or embedded in a platform service, because the response path changes in each case.
For identities, the important issue is not merely presence of a certificate or key, but whether the associated trust relationship is still valid. For platforms, the important issue is whether deployments can actually absorb a change without breaking traffic, authentication, or build pipelines. A CBOM that cannot be updated when systems change is a reporting artifact, not a control.
Teams should also decide who can approve exceptions when old protocols, weak algorithms, or long-lived certificates remain temporarily necessary. That decision cannot sit only with crypto specialists because the exception often affects service availability, release timing, and incident response. Joint ownership keeps those trade-offs visible before they become outages or untracked risk.
For readers who want a deeper identity view of lifecycle and governance, NHIMG’s NHI Lifecycle Management Guide shows why discovery, rotation, and offboarding have to stay tied to ownership and visibility. The same logic applies to CBOMs: if nobody owns the lifecycle, the inventory decays.
What breaks when ownership is split too narrowly
The main failure mode is blind spots between design-time and runtime. Crypto specialists may know which algorithms are allowed, but not which microservices, CI pipelines, or edge components still depend on deprecated material. Platform teams may see the deployment estate, but not the trust semantics behind a certificate chain or signing relationship. The gap creates false confidence and delayed remediation.
Another failure mode is orphaning. When a certificate or signing key is issued without a durable owner, renewal gets missed, revocation paths go unused, and emergency replacement becomes manual. In practice, that is where outages and trust breaks come from, because the inventory existed but no one was accountable for acting on it. A CBOM should make those ownership failures visible early, not during expiry.
Joint governance also matters for scale. The larger the fleet, the more likely the inventory includes reused templates, duplicate certificates, hidden service accounts, and embedded secrets spread across environments. NHIMG’s Top 10 NHI Issues is useful here because it shows how inventory and ownership problems compound when machine-facing trust material is distributed across many systems.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Non-Human Identity Top 10 addresses the attack surface, NIST SP 800-53 Rev 5 and CIS Controls v8 set the technical controls, and ISO/IEC 27001:2022 defines the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-53 Rev 5 | IA-5 — Authenticator Management | CBOMs track certificates and keys that must be issued, rotated, and retired securely. |
| IA-9 — Service Identification and Authentication | CBOMs document service trust material used by applications, workloads, and APIs to authenticate. | |
| AU-6 — Audit Record Review, Analysis, and Reporting | A useful CBOM needs reviewable evidence of ownership, changes, and trust-material updates. | |
| Recommendation — Track key and certificate lifecycle events under IA-5 and enforce timely renewal, rotation, and revocation. Map service trust dependencies and require strong authentication for machine-facing identities under IA-9. Review CBOM change evidence and investigate unexplained certificate or signing-key changes under AU-6. | ||
| ISO/IEC 27001:2022 | A.5.15 — Access control | CBOM governance depends on controlled ownership and administration of trust material and related systems. |
| A.8.24 — Use of cryptography | CBOMs exist to inventory and govern cryptographic mechanisms, certificates, and signing dependencies. | |
| Recommendation — Define ownership and approval boundaries for cryptographic trust assets under A.5.15. Inventory cryptographic dependencies and govern their approved use under A.8.24. | ||
| CIS Controls v8 | CIS-5 — Account Management | CBOM ownership relies on clear accountability for the identities and services that consume trust material. |
| Recommendation — Assign accountable owners for cryptographic dependencies and review them with account governance under CIS-5. | ||
| OWASP Non-Human Identity Top 10 | NHI-02 — Secret Leakage | CBOMs help identify exposed certificates and signing material before they are abused or copied. |
| NHI-07 — Long-Lived Secrets | CBOMs are especially useful when certificates or keys persist too long without rotation. | |
| NHI-05 — Overprivileged NHI | Ownership gaps often lead to trust material and related identities carrying excessive privilege. | |
| Recommendation — Inventory exposed certificates and signing material and eliminate leakage paths under NHI-02. Shorten certificate and key lifetimes and enforce rotation discipline under NHI-07. Reduce excessive permissions around certificate- and key-bearing identities under NHI-05. | ||
Practitioner Guidance
What to prioritise: assign one accountable owner for policy and one accountable owner for operational discovery, then make both sign off on the same CBOM definition. If the team cannot answer who rotates, who approves, and who remediates, the inventory is not ready for operational use.
What to verify: every CBOM entry should have an owner, an expiry or review date, an associated platform or service, and a clear action path for renewal, replacement, or retirement. If any of those fields are missing, treat the record as incomplete rather than authoritative.
Common mistake: treating CBOM work as a one-time crypto project. That approach captures the initial assets but misses the lifecycle work that keeps trust intact when certificates, keys, and protocols change over time.
Practitioner takeaway: CBOM ownership should follow operational accountability, not organizational convenience, because inventories only reduce risk when the people who govern trust and the people who run the platform can both act on them.
Related resources from NHI Mgmt Group
- Who should own MCP governance, identity teams or platform teams?
- Who should own CRA identity controls across product and platform teams?
- Who should own identity governance in a cloud-first organisation, security or platform teams?
- Who should own a central identity platform when multiple teams depend on it?
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Reviewed and updated by the NHIMG editorial team on October 12, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org