Ownership should sit with both the SAP platform team and the identity or infrastructure security function, because the risk spans patching, exposure control, and service identity governance. If one team owns only remediation and the other owns only access policy, the gap remains open.
Why This Matters for Security Teams
When SAP middleware can reach business-critical services, ownership becomes a boundary problem, not a ticket-routing problem. Platform teams often control patching, transports, and technical uptime, while identity or infrastructure security controls service accounts, secrets, and access policy. If those responsibilities are split without a single risk owner, exposure can persist even after a vulnerability is remediated. NHI Management Group has shown how hidden service identities and secret sprawl amplify that gap in its Ultimate Guide to NHIs, and the broader control model in the OWASP Non-Human Identity Top 10 makes the same point: identity exposure is part of application exposure.
The practical issue is that SAP integration paths rarely fail in only one layer. A vulnerable connector, an overprivileged RFC user, a stored secret in middleware, or an externally reachable endpoint can each create the same outcome: unauthorized access to SAP data or functions. That is why the accountable owner should be the function that can coordinate both remediation and entitlement reduction, not merely the team closest to the symptom. In practice, many security teams encounter this only after service accounts have already been abused, rather than through intentional exposure governance.
How It Works in Practice
Effective ownership usually works best as a shared operating model with one named risk owner. The SAP platform team should own system hardening, patch cadence, interface configuration, and connectivity changes. Identity or infrastructure security should own service identity standards, secret lifecycle, privileged access review, and exposure monitoring. The shared owner then coordinates the join points: which middleware endpoints are exposed, which identities can invoke them, and which compensating controls exist if patching is delayed.
Current guidance suggests treating SAP exposure risk as a composite control domain. That means tracking both technical exposure and identity exposure together, instead of waiting for separate processes to converge. Useful practices include:
- Maintaining an inventory of SAP-facing middleware, service accounts, API keys, and certificates.
- Mapping each exposed service to a business owner, technical owner, and identity owner.
- Requiring short-lived secrets or tightly governed rotation for integration credentials.
- Reviewing external access, internal lateral paths, and privileged RFC or interface users on the same cadence.
- Logging ownership decisions in the risk register so remediation and access changes move together.
That operating model aligns with 52 NHI Breaches Analysis, which illustrates how compromise often follows weak service identity governance rather than a single software flaw. It also aligns with the NIST Cybersecurity Framework 2.0, where governance and protection are inseparable from asset and access management. These controls tend to break down in heavily customised SAP landscapes because interface ownership is fragmented across application, middleware, and infrastructure teams.
Common Variations and Edge Cases
Tighter ownership often increases coordination overhead, requiring organisations to balance faster remediation against clearer accountability. That tradeoff becomes sharper in hybrid SAP environments, where on-premise systems, managed middleware, and cloud identity services all touch the same business process. There is no universal standard for this yet, but current guidance suggests naming one risk owner for exposure decisions while preserving delegated control for technical execution.
Edge cases matter. If a third-party integration platform manages the middleware, the SAP team still owns application exposure, but the vendor may own patch execution or connector configuration. If identity security owns secrets but not transport paths, exposure can remain open through network routes or default service endpoints. If the system supports many business units, separate app owners may exist, but the exposure risk should still roll up to a single accountable authority.
Use the Ultimate Guide to NHIs — Key Challenges and Risks to frame service identity sprawl, and pair it with the Ultimate Guide to NHIs — Why NHI Security Matters Now when arguing for executive ownership. In practice, the cleanest model is the one where remediation cannot be closed until both the SAP exposure path and the service identity path are closed.
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 CSF 2.0 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-01 | Service accounts and secrets are central to SAP exposure risk. |
| NIST CSF 2.0 | GV.RM-03 | This is a governance and risk ownership problem across teams. |
| NIST CSF 2.0 | PR.AA-01 | Access control over middleware and service identities drives the exposure. |
Assign one accountable owner for SAP exposure risk and document shared control responsibilities.
