A security code is the same thing as a CVV, or card verification value. A CVV, also known as a card security code (CSC) or card identification number (CID), among other names, is a 3-digit or 4-digit number used to help prevent fraud.
Visa, Mastercard and Discover cards all assign 3-digit security codes, which typically appear on the back of the card, next to the signature panel. American Express credit cards have a 4-digit security code, which you will find on the front of the card.
Regardless of what it’s called, the security code is designed to minimize unauthorized transactions on your account. When you make a “card not present” transaction, such as those completed online or over the phone, you will almost always have to provide the merchant with this code to complete the purchase. Aside from this, you should never share your code with anyone else.
You can check out our credit card security code guide to learn more about how CVVs work.
This answer was first published on 01/17/23 and it was last updated on 04/27/23. For the most current information about a financial product, you should always check and confirm accuracy with the offering financial institution. Editorial and user-generated content is not provided, reviewed or endorsed by any company.
