Why do SoD conflicts remain risky even when no fraud has occurred?

Because the risk lies in the access path as much as the transaction outcome. A user who can both create and approve can bypass controls whenever circumstances change, even if they have not yet done so. Governance must therefore cover both entitlement state and the possibility of future misuse.

Why This Matters for Security Teams

SoD is often treated as a fraud-prevention check, but the real security problem is broader: a conflicting access path can exist long before any bad transaction is made. Once one person or one NIST Cybersecurity Framework 2.0-mapped role can both initiate and approve sensitive actions, the control environment has already weakened. That matters because insider misuse, credential compromise, and process drift do not require a completed fraud event to create exposure.

This is why NHIMG treats entitlement design as a risk condition, not just an audit outcome. The Top 10 NHI Issues and the Ultimate Guide to NHIs — Why NHI Security Matters Now both reinforce the same operational reality: security teams need to govern who can act, when, and under what conditions, not only whether a transaction was later detected as improper. In practice, many security teams encounter SoD breakdowns only after an access review, regulator inquiry, or incident has already exposed the conflict.

How It Works in Practice

Effective SoD control starts with mapping business-critical actions into incompatible steps, then separating those steps across roles, workflow states, or technical enforcement points. The basic goal is to ensure that no single identity can both create risk and unilaterally clear it. That is true for human users and, increasingly, for non-human identities that submit requests, trigger automation, or move records between systems.

In operational terms, teams usually combine entitlement governance with runtime controls:

• Define toxic combinations such as initiate/approve, request/release, or configure/audit.
• Use RBAC for baseline assignment, but add approval workflow checks for exceptions.
• Apply JIT elevation when a conflicting privilege is needed briefly and can be time-boxed.
• Review service accounts and automation identities separately from user accounts, since they often inherit hidden privilege paths.
• Log both the entitlement state and the action history so that a dormant conflict can be spotted before misuse occurs.

For NHI-heavy environments, this is especially important because secrets and tokens can preserve access long after a human leaves the loop. NHIMG guidance on the OWASP NHI Top 10 highlights how over-permissioned machine identities can bypass the same separation principles that exist in policy documents but not in execution. The practical answer is to pair SoD with continuous entitlement validation, short-lived access, and exception approval that expires automatically. These controls tend to break down when legacy ERP, shared admin accounts, or batch automation requires end-to-end process ownership because the workflow itself was never designed for separation.

Common Variations and Edge Cases

Tighter SoD often increases operational friction, so organisations must balance control strength against process speed and staffing reality. That tradeoff is especially visible in smaller teams, overnight operations, and emergency response workflows where one person may legitimately need broad authority for a limited time.

Current guidance suggests treating these cases as controlled exceptions rather than relaxing the model. A few common edge cases are worth calling out:

• Emergency access: use break-glass approval, record the justification, and revoke the access automatically after the incident window closes.
• Compensating controls: when true separation is impossible, add stronger monitoring, dual logging, and post-action review.
• Vendor or automation access: do not assume a machine account is safer just because no human is directly clicking the button.
• Multi-step approvals: if one person can influence both the request and the approver selection, the SoD conflict still exists in practice.

The key distinction is that absence of fraud does not equal absence of risk. A conflicting entitlement can remain dormant for months and still be exploitable if credentials are stolen, roles are reassigned, or a workflow exception is normalised. That is why security teams should measure SoD not only by incident history, but by latent privilege paths that could be activated tomorrow.

Related resources from NHI Mgmt Group

• Why do non-human identities create compliance risk even when policies exist?
• Why do leaked secrets remain such a persistent NHI risk?
• When does an NHI become too risky to keep as-is?
• Why do unsalted password hashes remain risky even when the hash function is strong?