They should assign an explicit ownership and evidence path instead of assuming the platform will eventually absorb them. If a system cannot be connected yet, its access must still be reviewed, mapped, and risk-ranked separately so it does not become a permanent blind spot.
Why systems outside the IGA tool still need governance
Systems that are not yet connected to the IGA stack still have identities, entitlements, approvals, and review obligations. If you treat them as temporary exceptions with no owner, they become permanent blind spots. The governance question is not whether the platform can see them today, but whether the organisation can prove who owns them, who reviews them, and how access decisions are captured until integration exists.
That matters because disconnected systems often carry the exact risks IGA is meant to reduce: stale access, orphaned accounts, undocumented privileges, and weak evidence for audit or incident response. A gap in tooling is not a gap in accountability. The control objective is to keep the system inside a governed process even when it sits outside the automated connector model.
In practice, the minimum viable governance posture is explicit ownership, a defined evidence trail, and a recurring review cadence. The owner should be able to explain the system’s business purpose, the access population, the approval source, and the fallback process for removals or exceptions. If those answers do not exist, the system is not merely disconnected, it is unmanaged.
What good governance looks like before the connector exists
For an unconnected system, teams should manage the IAM and IGA Basics manually in a way that mirrors the same governance outcomes: defined owner, documented entitlements, periodic certification, and clear revocation authority. That is especially important when access decisions span people and machines, because the control failure is usually not the missing connector itself, but the absence of a dependable review path.
The next step is to treat the system as a scoped inventory item, not a vague exception. The team should know whether it is business-critical, whether it contains privileged access, whether it relies on shared credentials, and whether there is a compensating control for each access path. That is the point where manual governance becomes risk-ranked governance rather than administrative backlog.
When the system later becomes connectable, the migration should preserve the evidence trail rather than restart it. A useful pattern is to carry forward the access owner, the last review date, the approval history, and the open exceptions so the system does not lose its governance history during onboarding to the platform.
How to prevent disconnected systems from becoming permanent exceptions
Disconnected systems are often where access drift accumulates fastest, so teams should use a structured lifecycle view and NHI Lifecycle Management Guide style discipline even when the subject is broader than non-human identities. The useful habit is to manage the system through discovery, ownership, review, and decommissioning, rather than waiting for full automation before taking action.
That approach aligns with Access Reviews and Certification Guide principles: reduce review volume, add context, and close the loop on removals. For a disconnected system, the review record needs to show what was reviewed, who approved it, what changed, and when follow-up happened. Without that closed loop, the review is only a snapshot, not governance.
Where the system has high privilege, cross-environment reach, or ambiguous ownership, it should also be ranked alongside other access risks using the same logic that would apply in a broader Top 10 NHI Issues lens: visibility, excess privilege, credential exposure, and offboarding failure. The question is not whether the system is in the IGA tool, it is whether the access it exposes is still controlled well enough to withstand audit, incident response, and personnel change.
Risk and Threat Considerations
Disconnected systems create governance risk because they are easy to forget and difficult to evidence. Over time, that makes them attractive places for stale access, shadow approvals, and unrevoked credentials to accumulate, especially when teams assume the platform will eventually absorb them.
Failure mechanism: The system remains outside automated provisioning and review flows, so ownership, certification, and revocation depend on manual follow-through. That weakens detection of privilege creep, missed deprovisioning, and undocumented access changes.
Impact: The organisation can lose auditability and increase the chance that excessive or dormant access persists unnoticed, which raises the blast radius of compromise and makes incident containment slower.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST CSF 2.0 and NIST SP 800-53 Rev 5 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | ID.AM-01 — Physical Devices and Systems Inventory | Disconnected systems still need inventory and ownership to prevent blind spots. |
| PR.AA-01 — Identity and Credential Management | Manual governance still depends on accountable identity and access decisions. | |
| GV.OC-02 — Cybersecurity Roles, Responsibilities, and Authorities | The question is fundamentally about who owns governance when tooling coverage is absent. | |
| Recommendation — Inventory unconnected systems and keep them in the governed asset register. Require explicit ownership for access decisions on systems outside IGA. Assign clear ownership for every disconnected system and its access reviews. | ||
| NIST SP 800-53 Rev 5 | CA-7 — Continuous Monitoring | Manual review cadence is a compensating monitoring practice for gaps in automation. |
| AC-2 — Account Management | Disconnected systems still require lifecycle control over accounts and access. | |
| Recommendation — Continuously monitor exception systems until they are onboarded to IGA. Track, review, and remove accounts on systems outside the IGA connector set. | ||
Practitioner Guidance
What to prioritise: Assign a named owner, a review cadence, and a fallback revocation path before anything else. If the system cannot yet be connected, it still needs an accountable reviewer and a record of who can approve or remove access.
What to verify: Confirm that every disconnected system has an access inventory, a last-review date, and an evidence location that an auditor or incident responder can follow. If any of those are missing, treat the system as a governance exception, not a low-priority backlog item.
Decision rule: If the system holds privileged, production, or cross-environment access, rank it ahead of low-impact systems for manual review and remediation. If it is low-risk and well-bounded, keep it in a lighter but still explicit review cycle until integration is available.
Practitioner takeaway: The right standard is not “connected to IGA,” it is “governed with a known owner and defensible evidence until it is connected.”