What is a CVV Testing Attack?
A CVV testing attack, also known as a credit card verification value (CVV) test, is a cyber attack where an attacker attempts to validate stolen credit card information. This is done by using the CVV number, which is a three or four-digit number on the back of a credit card, to verify the card's validity online.
How CVV Testing Attacks Work
Attackers typically obtain stolen credit card information through various means, such as phishing, skimming, or data breaches. They then use this information to test the validity of the card by making small purchases online. If the transaction is successful, it confirms that the card is active and has not been reported lost or stolen.
Card Testing Guide: Luhn Check, 3DS Challenge, CVV UX, and Sandbox Test Cards
Preventing CVV Testing Attacks
Here are some measures you can take to protect yourself against CVV testing attacks:
- Regularly monitor your credit card statements for any unauthorized transactions.
- Use two-factor authentication for online purchases.
- Keep your software and security systems up to date.
- Report any suspicious activity to your bank immediately.