Start with role design, not monitoring. Remove excess privilege, enforce segregation of duties, and ensure business owners validate which users can create, approve, or change sensitive records. Then pair that model with access reviews and lifecycle checks so temporary access does not become standing access. The goal is to make inappropriate action difficult, not merely detectable.
Why This Matters for Security Teams
Fraud in ERP and financial applications usually starts as an identity problem, not a transaction problem. If a user, service account, or integration can create vendors, alter bank details, approve journals, or bypass segregation of duties, the business has already created an abuse path. The practical control question is whether access is tightly scoped, time-bound, and validated by the business owner, not whether alerts exist after the fact.
That is why modern guidance favors governance that combines least privilege, lifecycle control, and explicit accountability. The NIST Cybersecurity Framework 2.0 emphasizes access governance as part of operational resilience, while NHIMG research shows how often identity sprawl undermines control: the Ultimate Guide to NHIs — Why NHI Security Matters Now highlights that NHIs outnumber human identities by 25x to 50x in modern enterprises. In practice, many security teams discover fraud paths only after a payment exception, a false vendor, or a privileged workflow misuse has already occurred, rather than through intentional access design.
How It Works in Practice
The strongest fraud reduction programs start by mapping sensitive ERP actions to business capability, not job title. A controller may need to approve adjustments, but not create vendors; an accounts payable clerk may enter invoices, but not change bank accounts; an integration may post records, but not approve exceptions. The control objective is to separate initiation, approval, and release so no single identity can complete a fraudulent chain.
For non-human identities, the same logic applies with more discipline. Secrets and API keys should be short-lived, scoped to a single workload, and revoked automatically when the task ends. NHIMG guidance in the Top 10 NHI Issues and the Ultimate Guide to NHIs — Key Challenges and Risks stresses that excessive privilege, poor rotation, and weak offboarding are recurring failure points. That aligns with NIST SP 800-63 Digital Identity Guidelines, which treat identity assurance as a lifecycle problem, not a one-time login event.
- Use role design to remove standing access to vendor master data, payment approval, journal posting, and bank-detail changes.
- Require business-owner validation for any access that can initiate, approve, or modify financial records.
- Apply just-in-time access for elevated tasks, with automatic expiration and logged approval.
- Review access against actual transaction rights, not broad application roles that bundle unrelated permissions.
- Check service accounts, bots, and integrations for the same segregation rules as human users.
Monitoring still matters, but it should confirm policy enforcement rather than compensate for weak entitlement design. These controls tend to break down when legacy ERP customizations bundle too many duties into a few roles, because the system cannot separate legitimate finance work from abuse without redesign.
Common Variations and Edge Cases
Tighter segregation of duties often increases operational friction, requiring organisations to balance fraud prevention against closeout speed and shared-service efficiency. That tradeoff is real in finance teams that run month-end under deadline pressure or rely on outsourced processing.
Current guidance suggests treating those exceptions as temporary and explicit, not permanent. If a business unit needs emergency override access, it should be time-boxed, owner-approved, and reviewed after use. If an ERP module cannot support fine-grained entitlements, compensating controls such as dual approval, transaction thresholds, and reconciliations become necessary, though there is no universal standard for this yet.
The hard edge case is automation. When bots reconcile accounts, post invoices, or sync master data, the risk is not just misuse by an insider but abuse of the automation itself. In those environments, teams should align OWASP NHI Top 10 style controls with finance governance so identities cannot be reused across unrelated workflows. The practical rule is simple: if an identity can move money, change payees, or approve exceptions, it needs stronger proof, narrower scope, and a shorter lifetime than ordinary application access.
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 SP 800-63 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | PR.AC-4 | Access permissions must be managed to prevent abusive ERP and finance actions. |
| NIST SP 800-63 | IAL/AAL | Identity assurance and authentication strength affect who can approve high-risk financial actions. |
| OWASP Non-Human Identity Top 10 | NHI-03 | Short-lived, well-scoped non-human credentials reduce fraud paths in financial automation. |
Require stronger identity proofing and authentication for access that can move money or change records.
Related resources from NHI Mgmt Group
- How should teams reduce the risk from overprivileged NHIs?
- How should security teams reduce AI-powered fraud in SaaS applications?
- How should security teams reduce fraud risk in account recovery workflows?
- How should security teams reduce fraud risk when attackers can imitate trusted people and processes?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on July 4, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
