CVV SITES
Card Verification Value, or CVV, is a three- or four-digit number that appears on the back of most credit and debit cards. It provides a security layer for online transactions and helps prevent fraudulent purchases.
The first card to employ CVVs was Mastercard, which introduced them in 1997. VISA and American Express followed suit in 2001.
Originally, CVVs were 11 characters, but the UK Association of Payment Clearing Service revised them to three digits. This has reduced the amount of physical card fraud.
In recent years, fraud has shifted to digital, however. Many counterfeit cards are now used for purchasing goods at big box retailers. Several reputable merchants use Secure Sockets Layer technology to protect consumers from online fraud.
Banks and payment systems require you to enter the owner's name and surname, card number, card authentication code (three-digit code on the back) and its validity period when paying with a card. Authentication code - CVC or CVV - serves as