Accountability should sit with security, IAM, and application owners together, because nonfederated environments usually require manual access workflows that cross team boundaries. If access is managed in business units without central oversight, retention risk rises sharply. Governance should define ownership for provisioning, deprovisioning, review cadence, and exception handling so no system is left outside control.
Why This Matters for Security Teams
access sprawl in nonfederated applications is not just an IAM housekeeping issue. It creates unclear accountability, inconsistent approvals, and delayed revocation across systems that often rely on manual tickets or local admin decisions. That is exactly where privilege accumulates. NHI Management Group’s Ultimate Guide to NHIs notes that only 20% of organisations have formal offboarding and API key revocation processes, while 97% of NHIs carry excessive privileges.
For security teams, the practical risk is that no single owner can prove who approved access, who reviewed it, or who was responsible for removal when the business need ended. In nonfederated environments, that gap is amplified because application teams may control the system, IAM may control the workflow, and security may be expected to enforce policy without the authority to do the actual deprovisioning. Current guidance from the OWASP Non-Human Identity Top 10 and NIST SP 800-53 Rev 5 Security and Privacy Controls both point toward explicit ownership, review, and revocation controls rather than informal stewardship.
In practice, many security teams encounter access sprawl only after a dormant account, stale API key, or unreviewed application privilege is already being used outside its intended scope.
How It Works in Practice
Accountability in nonfederated applications works best when it is assigned as a shared control model, not a vague committee responsibility. Security defines policy, IAM runs the access process, and application owners approve and validate business need. That division matters because nonfederated systems often lack central identity integration, so governance must compensate with explicit workflows, periodic review, and documented exception handling.
A workable operating model usually includes the following:
- One named business owner for each application, responsible for access justification and review.
- IAM or identity operations responsible for provisioning, deprovisioning, and control evidence.
- Security responsible for policy, monitoring, and escalation when reviews are missed.
- Defined cadence for recertification, especially for privileged or service access.
- Exception tracking with expiration dates so temporary access does not become permanent.
This is also where NHI governance becomes relevant, because nonfederated apps frequently rely on service accounts, API keys, and shared credentials. NHI Management Group’s Ultimate Guide to NHIs – Key Challenges and Risks shows that secrets and privileges are often left in vulnerable locations or retained far longer than intended. The operational answer is to make ownership visible in the ticketing workflow, map each account to a human approver, and ensure deprovisioning is not dependent on tribal knowledge. Where possible, align the process with the OWASP Non-Human Identity Top 10 and control families in NIST SP 800-53 Rev 5 Security and Privacy Controls so accountability is auditable, not implied.
These controls tend to break down when application ownership is diffuse across business units and no team has authority to remove access without an extra approval loop.
Common Variations and Edge Cases
Tighter access governance often increases operational overhead, requiring organisations to balance faster business change against stronger control over stale entitlements. That tradeoff is especially visible in legacy apps, acquired systems, and vendor-managed platforms where central federation is unavailable. In those cases, current guidance suggests that accountability should follow the system owner, even if execution is delegated to IAM or operations.
There is no universal standard for every nonfederated environment, but best practice is to avoid split responsibility without a single decision-maker. For example, if one team can approve access but another team must revoke it, the process needs a clear SLA and escalation path. If service accounts are used, those credentials should be treated as a governed NHI asset with separate ownership, review, and rotation rules. That aligns with the broader risk picture documented in the 52 NHI Breaches Analysis, where weak ownership and stale credentials repeatedly turn into incident pathways. For nonfederated applications, the safest rule is simple: if no one can prove they own access removal, access sprawl will become everyone’s problem after the incident.
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, NIST Zero Trust (SP 800-207) 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 | Ownership and lifecycle control are central to stopping access sprawl. |
| NIST CSF 2.0 | PR.AA-5 | Identity and access management must be controlled and reviewed to prevent drift. |
| NIST SP 800-53 Rev 5 | AC-2 | Account management directly covers provisioning, review, and removal in sprawl-prone apps. |
| NIST Zero Trust (SP 800-207) | PR.AC-4 | Zero Trust limits excessive standing access in nonfederated systems. |
| NIST AI RMF | Governance and accountability are key risk-management concerns for autonomous access decisions. |
Implement account lifecycle controls with documented approvals, expirations, and timely deprovisioning.
Related resources from NHI Mgmt Group
- What is the difference between protecting applications and protecting access?
- Who should be accountable for logging and proving access changes across SaaS and identity workflows?
- How should security teams run access reviews for non-human identities?
- How should security teams govern non-human identities that have persistent access?
