Fraud risk & control reviews

Test how the control environment could actually be exploited.

Audit Corridor examines fraud exposure through plausible threat behaviour, operating reality and evidence from the process itself—not through a generic compliance checklist detached from how decisions are made.

Threat-ledControl pathwaysOverride behaviourPractical response

Updated: 25 August 2026

Direct answer

A fraud-risk and control review identifies plausible abuse scenarios, maps the controls expected to prevent or detect them and tests how those controls operate in practice. The aim is a prioritised response grounded in actual decision paths, incentives and evidence.

Decision questions

What this work is designed to answer.

The review begins with how value, authority or information could be misused. It then examines where preventive, detective and response controls depend on assumptions that may not hold in practice.

How could the process be exploited?

Develop realistic scenarios involving authority, access, related parties, override, collusion, false records or concealment.

Where can controls fail?

Test design, ownership, evidence of operation, escalation, data quality and the points at which a control can be bypassed or neutralised.

Which response matters first?

Prioritise changes by exposure, detectability, decision value and implementation reality rather than presenting an undifferentiated recommendation list.

Evidence architecture

The conclusion is only as useful as the trail beneath it.

The evidence is drawn from the operating model and a defined set of transactions, decisions or incidents. The review is proportionate to the exposure and should distinguish design weakness from failure in operation.

Process and control material

Policies, procedures and authority matrices
Process maps and system workflows
Control descriptions and test records
Exception, override and escalation logs
Incident and investigation records

Operating evidence

Selected transactions and supporting records
User access and approval trails
Vendor, customer and employee master data
Monitoring reports and alert dispositions
Interviews and walkthrough observations

Engagement sequence

A controlled path from question to finding.

Scope, evidence handling, analytical challenge and reporting remain visible throughout the mandate.

Define the exposure

At scoping

Select processes, assets, decision points, threat actors, scenarios and the risk decisions the review must inform.

Map controls to threats

At design review

Connect each material scenario to preventive, detective and response controls, owners and required evidence.

Test operating reality

During review

Use walkthroughs, selected records, data patterns, exceptions and interviews to examine whether controls work as represented.

Prioritise the response

At conclusion

Rank gaps, explain exploitation paths and set out practical actions, ownership questions and residual limitations.

Decision-grade delivery

What a useful output contains.

The final product should allow leadership to see the scenario, the failed or vulnerable decision point and the evidence supporting the priority assigned to it.

Core work product

Fraud-risk scenario register
Process and decision-point maps
Control-to-threat matrix
Design and operating observations
Override and exception analysis

Reasoning and limits

Prioritised remediation actions
Detection and escalation opportunities
Ownership and accountability questions
Residual exposure and limitations
Incident-readiness considerations

Scope boundary: A focused fraud-risk review is not a statutory audit, certification or guarantee that fraud will be prevented. It identifies material scenarios and control questions within the agreed scope and evidence available.

Common questions

Concise answers before a mandate begins.

These answers explain the usual architecture. The facts, access, jurisdiction and intended use determine the actual scope.

How is a fraud-risk review different from internal audit?

A fraud-risk review starts with plausible abuse behaviour and asks how a process can be exploited, concealed or overridden. Internal audit may cover a wider assurance objective. The review can complement an audit plan but does not replace the organisation’s assurance functions.

Is an actual fraud incident required?

No. A review can be preventive, triggered by a near miss, focused on a high-risk process or conducted after an incident to examine wider control implications. The scope should make clear whether fact-finding about a specific event is included.

Which processes can be reviewed?

Common areas include credit appraisal and monitoring, procurement, vendors and related parties, delegated authority, payments, onboarding, transaction monitoring, incident response and evidence preservation. The review should remain focused on the organisation’s real exposure.

What does management receive?

Depending on scope, management may receive threat scenarios, process and decision maps, control observations, evidence of operation, prioritised remediation, ownership questions and residual limitations.

Connected work