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If there are a relatively small number of payments made each day on your site, the most effective tool against transaction fraud is to manually review each transaction.
The list below provides a few suspicious circumstances, which may lead to a transaction fraud:
A shopper ordering unusually large amounts of an item without any preference for the size, colour, make or model
An existing shopper who suddenly orders a substantial volume of goods
A shopper who provides you with more than one card to cover one order or a set of orders
A shopper who orders more than once in a given day
A first time shopper ordering a number of goods quickly
A number of large orders from shoppers at a trade show
A shopper who has attempted the same transaction more than once, with the card failing at the first attempt
A shopper whose card issuer country does not match their delivery address. This information is shown on your email receipts and within your Merchant Interface.
A shopper who refuses to confirm their credit/debit card and billing address details.
As the process of reviewing each transaction by hand is both time consuming and expensive we recommend that based on the circumstances above you create your own fraud prevention rules, that highlight such unusual transactions so you can examine them closely.
See also:
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