Accountability should sit with the identity owner and the programme that governs the credential lifecycle. If a shared account or secret is used by multiple people, the organisation loses a clean chain of responsibility, so ownership, review, and offboarding must be tied to the credential itself.
Why This Matters for Security Teams
Shared credentials break the audit trail, and once that happens, incident response has to answer two questions at once: who used the account and who approved its use. That is why accountability should be attached to the credential lifecycle, not assumed from a named login. NHI Management Group has repeatedly highlighted how secret sprawl and weak lifecycle ownership make investigations harder, especially when one secret is reused across teams and tools.
This is not just a logging problem. Shared access distorts usage metrics, hides overprivilege, and makes offboarding incomplete because the organisation cannot prove which person, workload, or process actually exercised the access. Current guidance from NIST Cybersecurity Framework 2.0 and the OWASP Non-Human Identity Top 10 points toward explicit ownership, least privilege, and traceable identity lifecycles for both human and non-human access. In practice, many security teams encounter accountability gaps only after a shared key is reused in an incident and the log evidence no longer supports a clean chain of responsibility.
How It Works in Practice
The practical answer is to assign accountability to the identity owner, the system owner, and the programme that governs issuance, rotation, and revocation. For non-human access, that usually means the secret, API key, certificate, or workload identity is treated as the asset of record, with one accountable owner and one documented business purpose. The right control model is not “who remembers the password” but “who can approve use, review logs, and revoke access when conditions change.”
Teams that want auditability usually separate duties into four layers:
- Ownership: one named team owns the credential or workload identity.
- Usage approval: access is approved through a controlled process, not ad hoc sharing.
- Telemetry: each use is tied to a unique principal, token, or workload context where possible.
- Lifecycle control: rotation, expiry, and offboarding are enforced centrally.
That is where the NHI lifecycle guidance from NHI Lifecycle Management Guide becomes operationally useful: if the credential itself has an owner, review cadence, and retirement path, then audit logs can be interpreted as evidence rather than guesswork. When shared access cannot be eliminated immediately, the best practice is evolving toward compensating controls such as per-user checkout, just-in-time issuance, and stronger session attribution. Standards work on identity assurance in NIST SP 800-63 Digital Identity Guidelines supports the broader principle that identity evidence should be attributable and verifiable, even if implementation differs for machines versus people. These controls tend to break down when legacy batch jobs, vendor integrations, or emergency break-glass accounts still require a single shared secret because attribution gets lost at the point of execution.
Common Variations and Edge Cases
Tighter accountability often increases operational overhead, so organisations have to balance audit fidelity against administrative friction. That tradeoff is especially visible in environments with many short-lived pipelines, managed services, or third-party integrations, where one secret may legitimately support multiple automated tasks.
There is no universal standard for this yet, but current guidance suggests three useful distinctions. First, if the credential is truly shared, the account owner must still be accountable for logging, review, and revocation even when individual users cannot be identified from the log alone. Second, if the system supports it, organisations should move from shared secrets to per-actor workload identities and short-lived tokens so usage can be attributed at request time. Third, if a shared credential cannot be removed, the risk should be formally accepted and reviewed as a control exception rather than treated as normal practice.
For teams seeing repeated misuse or unexplained access patterns, NHIMG’s 2024 Non-Human Identity Security Report found that 23.7% of organisations still share secrets through insecure methods such as email or messaging applications, which is exactly the kind of practice that erodes accountability. That is also why the Top 10 NHI Issues matter here: shared credentials are not just a hygiene problem, they are a governance failure that makes every downstream metric less trustworthy.
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 address the attack and risk surface, while NIST CSF 2.0 and NIST AI RMF set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-01 | Shared credentials weaken identity attribution and accountability. |
| NIST CSF 2.0 | PR.AC-1 | Access rights must be traceable to an approved identity and owner. |
| NIST AI RMF | GOVERN | Governance must define responsibility for identity lifecycle and logging integrity. |
Replace shared secrets with uniquely owned NHI credentials and track every credential to one accountable owner.
