What is CVM? CVM (also referred to as CVV2 or CID) is a method used to ensure that a credit card being used in a purchase is in the possession of its owner. We use the CVM to enhance the security of your ordering experience and help detect any fraudulent use of your card. The CVM security code is a 3 or 4 digit code imprinted on the physical credit card, but not embedded or encrypted in the magnetic stripe. American Express Visa, MasterCard, and Discover |