What is CVV Enumeration?
CVV enumeration refers to the process of systematically attempting to identify valid Credit Card Verification Values (CVVs) associated with real credit card numbers. CVVs are three or four-digit codes found on the back of credit cards, and they are used as an additional layer of security during transactions.
How Does CVV Enumeration Work?
Acquisition of Credit Card Information:
Testing CVV Validity:
Successful Transaction:
What Is CVV Enumeration? Definition, Mechanics, and Detection
Acquisition of Credit Card Information
Credit card information can be acquired through various means, including skimming devices, hacking into databases, or through phishing attacks. The goal is to gather as many credit card numbers as possible.
Testing CVV Validity
The next step involves attempting different CVV combinations for each credit card number. This process can be automated to speed up the identification of valid CVVs.
Successful Transaction
Once a valid CVV is identified, the attacker can use the credit card information for fraudulent transactions, bypassing the need for the actual card and the cardholder's PIN.