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Featured Credit Card Transaction Processing Article

Preventing Online Fraud

By: Robert Levings

PREVENTING ONLINE FRAUD
By Robert Levings, President, EasyPay123

The following article deals with the issue of online fraud, its impact on merchants, and the ways that it can be prevented. It is part of a series of articles offered by EasyPay123 to help merchants understand the many facets of processing credit card payments.

Overview

As criminals become more sophisticated in their attempts to commit online credit card fraud, new technologies are required to discourage and detect fraud before it occurs. Risk of fraud is a potential barrier to online purchases. It can also be costly to merchants, since they must bear the costs of successfully disputed purchases. In addition, too many “charge-backs” can cause merchants to have their merchant account status downgraded or revoked, thereby negatively impacting their business. A number of technologies are emerging to both secure sensitive data and reduce the amount of successful fraud at the various stages of the order cycle.

Input-Based Methods

Several technologies exist that verify data input by purchasers at the time an order is placed on a merchant’s website.

AVS (Address Verification Service) matches the street number and zip code that is entered by a purchaser with address information on file with the credit card companies. A message is then sent back to the payment gateway indicating the degree to which the address information matches (e.g. “Address matches, zip code does not”). Based on the AVS settings or 'filters' the merchant has set within the payment gateway, the merchant can then make a decision about how they wish to proceed with the transaction when there are mismatches. One key drawback to AVS processing is that checking occurs only after a valid authorization is returned. This means that there will be a hold on the customer’s account for the amount of the transaction, even though the merchant may decide to decline based upon the AVS results. This method is widely used, however.

EasyPay123’s AVS tool (powered by Skipjack Transaction Network) enables merchants to control how closely the numeric address information must match in order for the transaction to be allowed to settle.

Another technology supported by the credit card companies is called CVV2 (Card Verification Value) by VISA, and CVC2/CID by MasterCard and AMEX respectively. These technologies use codes that are embossed on the back or front of VISA, MasterCard and AMEX cards. CVV2 and its counterparts require a card holder to enter the codes at transaction time to verify that they are in physical possession of the card. Since these values are not stored in transaction databases with other credit card information, hackers cannot gain access to them if they somehow acquire credit card numbers from a database. During the authorization process, the card issuing bank verifies the CVV2 value that was entered with the credit card number.


Communication-Based Methods

The primary technology for securing transactions as they are transmitted over the Internet is Secure Sockets Layer (SSL). SSL “encrypts” confidential data (i.e. converts it into an unreadable form) to ensure that unauthorized individuals are not able to view or modify it as it is being passed between the customer, the....[MORE]

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