What does the built-in rule 'Block if CVC verification fails' signify?

The built-in rule 'Block if CVC verification fails' signifies a comprehensive approach to card verification that encompasses multiple checks. When a card is used for transactions, the CVC (Card Verification Code) is a critical security feature that helps verify that the person making the transaction possesses the physical card. Therefore, if this verification fails, it could indicate a higher risk of fraud.

The rule essentially represents various security measures in place to assess and validate the legitimacy of a transaction.

• A traditional card check typically involves verifying the card details, including the number, expiration date, and CVC, ensuring they all match the expected format and values held by the card issuer.

• A machine learning card check leverages algorithms to detect patterns and evaluate the likelihood of a transaction being fraudulent, which may include analyzing CVC verification as part of the overall transaction risk assessment.

• A 3DS (Three-Domain Secure) check is part of a protocol designed to provide an additional layer of security for online card payments. It often involves collecting and validating cardholder details, which can include the CVC check.

Thus, saying 'Block if CVC verification fails' indicates a built-in mechanism that utilizes traditional reviews, machine learning insights, and 3DS protocols,