this does happen, you should see either the entire 16digit credit card number or just the last four digits followed by a special 3digit code. Director of community affairs for Discover Financial. Especially if youve never made an online purchase with that specific card. Your CVC or CVV number is used for verifying online or over the phone payments when you cant use your PIN or signature. If you have a Visa or Mastercard branded credit or debit card. No penalty rate and no annual fee. The editorial content on this page is based solely on the objective assessment of our writers and is not driven by advertising dollars. The CID is the fourdigit code printed just above the Account Number. Just like your PIN, for example, it has not been provided or commissioned by the credit card issuers. Finding them can be confusing, it doesnt matter what you call them a card security code CSC card verification value CVV or CV2 card verification code CVC or even a card code verification CCV those three or four digits provide. Itll be a 3 octavius digit number located on the back of your card. Discover calls their code CID2, since the security code is a safety feature. While the CVV or CVC number is in place to protect your credit card from fraudulent transactions or phishing scams when using your card for online or phone transactions. The CVV or CVC number is considered a Secure Socket Layer SSL which is commonly used technology which is a digitally provided certification process. Its important to know that there are still chances.