Apart from entering a card number and an expiration date, you probably will have to enter a security code — a feature on every credit card meant to help verify the card is in your possession.

The CyberGuy provides tips to protect yourself from criminals who use various methods to make unauthorized transactions using your account information.

Credit card numbers are used to identify the card network, the card issuer and the cardholder. Other numbers on a card include a security code, expiration date and a customer service phone number.

Here's how it works: When you're ready to make a purchase, MaskMe will randomly generate a masked card - a one-time-use credit card number, expiration date and security code with a name of your ...

Many credit card companies now allow instant access to digital card numbers for use ... adds an extra layer of security by requiring a second verification step (e.g., a code sent to your phone ...