What is Triangulation Fraud? How Merchants Can Prevent It
Blog post from Basis Theory
Triangulation fraud is an ecommerce scheme involving a fraudulent seller, an unwitting customer, and a legitimate merchant, in which the fraudster operates a convincing online storefront, collects payment and card details from a customer, then uses a separately stolen credit card to purchase the ordered item from a real merchant for direct shipment to the customer. Although customers may receive the product they ordered, they risk unauthorized future charges, duplicate payments, or failed delivery, while legitimate merchants can face chargebacks, financial losses, payment-provider restrictions, and reputational harm when fraudulent orders surface. Fraudsters benefit from immediate customer revenue and access to additional payment data, often concealing the scheme until chargeback patterns emerge. Suggested defenses include risk-scoring and fraud-detection tools that identify suspicious transaction velocity, repeated purchases, IP-address patterns, mismatched billing and shipping details, and abnormal account behavior, alongside prompt investigation to prevent schemes from expanding. Merchants are also advised to use payment partners with strong security practices and PCI-DSS compliance, while continuously reviewing their security environment and provider relationships as operational risks evolve.
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