Fraud prevention
Fraud Prevention for Merchant Payments: Controls, Staff Training, and Dispute Reduction
Payment fraud prevention combines technology, staff procedure, customer communication, transaction review, and documentation.
Fraud prevention layers
Card-present controls
EMV, contactless, terminal security, receipt review, staff training, and unusual-transaction procedures.
Online controls
AVS, CVV, velocity filters, IP review, device signals, 3DS where appropriate, and manual review.
Operational controls
Clear refund rules, order verification, shipping checks, and customer communication.
Documentation
Receipts, invoices, delivery proof, signed agreements, terms, and support history.
Fraud and dispute prevention table
| Risk | Control |
| Counterfeit card | Use EMV-capable card-present acceptance. |
| Stolen card online | Use fraud filters, AVS/CVV, velocity limits, and review rules. |
| Friendly fraud | Keep clear receipts, policies, fulfillment records, and customer communication. |
| Account takeover | Use strong access control and monitor user/admin changes. |
Frequently asked questions
Can fraud be eliminated?
No. Controls reduce risk and improve evidence, but cannot eliminate all fraud.
What is friendly fraud?
A customer disputes a legitimate transaction, sometimes due to confusion, buyer remorse, or intentional abuse.
Why does staff training matter?
Staff often see unusual behavior before systems do, especially in card-present environments.