Q:

What security measures are used in Visa credit card transactions?

A:

Quick Answer

Visa uses a combination of techniques to ensure card security, including the use of three-digit security codes, a tokenization system used for online and mobile payments, and a one-time code generation system incorporated into Visa cards with security chips, as reported on the company's website. Visa also relies heavily on real-time monitoring to detect fraud and place holds on transactions and accounts if its system detects unusual activity.

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Full Answer

The use of three-digit security codes on the back of Visa cards helps ensure that the card is in the physical possession of the card owner during an online transaction, according to Visa. Similarly, Visa cards with an embedded chip generate a single-use code that counterfeit cards cannot replicate when performing transactions.

The use of a token system for transactions based on the EMVco tokenization standard further enhances digital account security, notes Visa. Tokenization allows for the replacement of the standard account number associated with a Visa card with a separate identifier that the payment processor can only decode during the transmission of transaction information, as explained by EMVco. The use of the Secure Sockets Layer encryption protocol further secures many online transactions involving Visa cards and other credit cards, according to SSL certificate provider Comodo.

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