Separation of duties is the most important practice for preventing and detecting electronic payment fraud.

• A. Separation of duties is not necessary for payment fraud prevention.
• B. Separation of duties is the least effective control.
• C. Separation of duties should be avoided because it slows processing.
• D. Separation of duties is the most important practice for preventing and detecting electronic payment fraud.

Answer: (D)

Separation of duties creates multiple layers of oversight by splitting key steps in the electronic payment process among different people or roles. When initiation, approval, processing, and reconciliation are performed by separate individuals (and supported by appropriate system access controls and audit trails), no single person can both authorize and complete a payment or conceal errors or theft. This division makes fraud far more difficult and increases the chance that irregularities are caught during the independent review.

In practice, you might have one person initiate a payment, another review and approve it, and a third handle reconciliation with bank statements. The system logs who did what, creating traceability that helps detect and deter wrongdoing. While the workflow can require a bit more coordination, the protection it provides against fraud and the facilitation of audits make it the most important defensive practice in electronic payments. Other statements that downplay its value or imply it’s merely a hindrance misstate its crucial role in preventing and detecting fraud.