Virtual cards are actually replacement cards. They contain a set of numbers that replace your card’s real numbers. Because you are using different numbers for each transaction, there is a remote possibility that your information will be used fraudulently, even if thieves become successful in taking your information.
Virtual cards work more like prepaid cards. So aside from the replacement numbers, you have the freedom to set the card’s expiration date and its credit limit. So if you lose your card, you can cancel it anytime to keep your money and identity intact.