Manual processes usually break at scale. Reviews become inconsistent, revocations lag behind departures or role changes, and secret handling depends on individual operators rather than enforced workflow. Over time, that increases the chance of stale access, incomplete audit trails, and misaligned entitlements, especially when multiple teams manage the same application without a shared control framework.
Why This Matters for Security Teams
Disconnected applications are where manual review and secret handling fail most often because there is no dependable control plane to enforce consistency. When approvals live in email, spreadsheets, or ticket notes, revocation depends on someone remembering to act. When secrets are rotated by hand, access often outlives the job function, the project, or even the service account that created it.
This is exactly the kind of drift described in the Ultimate Guide to NHIs, where NHI Mgmt Group notes that only 20% of organisations have formal offboarding and API key revocation processes, and 96% store secrets outside secrets managers in vulnerable locations. That risk becomes more severe when the application is disconnected from modern identity tooling, because there is no native enforcement point for access review outcomes or secret lifecycle state. Current guidance from the OWASP Non-Human Identity Top 10 and the NIST Cybersecurity Framework 2.0 both point toward repeatable identity governance, but they do not remove the operational burden when systems cannot automate it.
In practice, many security teams discover stale access only after an audit exception, an incident, or a former operator is still able to reach a production secret.
How It Works in Practice
Manual review and secret management usually break in the same places: ownership, timing, and proof. A disconnected application may still rely on service accounts, local config files, or shared API keys, but the people approving access often do not have live visibility into who still needs it. That creates a lag between the decision and the revocation, and that lag is where stale entitlements accumulate.
A safer pattern is to treat access review and secret handling as lifecycle controls, not one-time admin tasks. The practical sequence is straightforward:
- Maintain a current owner for each application, account, and secret.
- Review entitlement lists on a fixed cadence, not only during audits.
- Use separate approval paths for human access and machine access.
- Rotate secrets on a defined schedule and after personnel or role changes.
- Revoke unused credentials immediately and confirm removal through logs.
NHIMG’s Guide to the Secret Sprawl Challenge is useful here because it frames secret sprawl as a governance failure, not just a storage problem. The operational goal is to reduce reliance on manual recall by binding each secret to an owner, a purpose, and an expiry date. That aligns with the intent of NIST SP 800-53 Rev. 5 Security and Privacy Controls, which expects access control, auditability, and configuration discipline even when the application is old or isolated.
Where teams have enough maturity, they also centralise inventory data so reviews can compare active entitlements against actual system usage. That does not require full platform replacement, but it does require authoritative records and a revocation workflow that cannot be bypassed by individual operators. These controls tend to break down when ownership is split across multiple teams because no single group can prove which secrets are still valid.
Common Variations and Edge Cases
Tighter secret governance often increases operational overhead, so organisations have to balance review frequency and rotation rigor against the effort required to support legacy systems. That tradeoff is especially visible in disconnected applications that cannot call modern vaults, identity providers, or SCIM-based automation.
Best practice is evolving, but current guidance suggests three common exceptions deserve special handling. First, break-glass credentials should be exempt from normal review cadence only if their use is heavily logged and independently reviewed. Second, shared service accounts may persist in legacy environments, but they should still have named ownership and short rotation windows. Third, offline systems may require manual exports or paper-based procedures, yet those should be treated as temporary compensating controls rather than a permanent operating model.
The broader lesson from the Top 10 NHI Issues and the NHI Lifecycle Management Guide is that lifecycle ownership matters more than the storage mechanism. If the application cannot enforce revocation automatically, the organisation must compensate with stronger evidence, tighter attestations, and faster manual closure. That becomes hardest in environments with contractors, mergers, or seasonal teams because access changes faster than review cycles can keep up.
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, NIST SP 800-53 Rev 5 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-02 | Manual reviews and secret handling are core NHI lifecycle risks. |
| NIST CSF 2.0 | PR.AA-01 | Identity and credential governance depends on accurate access accountability. |
| NIST SP 800-53 Rev 5 | AC-2 | Account management is directly implicated when revocation stays manual. |
| NIST AI RMF | Governance and monitoring principles apply to automated access decision processes. |
Automate account lifecycle decisions where possible and document manual exceptions with evidence.
Related resources from NHI Mgmt Group
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Reviewed and updated by the NHIMG editorial team on August 27, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
