Credit card numbers are either 15 or 16 digits ... Only shop on secure websites and Wi-Fi networks. Never enter your credit card details while using a public internet connection, and make sure ...

Limiting the number of cards you bring reduces the ... Public Wi-Fi at airports, hotels and cafés is rarely secure. Avoid entering credit card information or logging into banking websites while ...

Thankfully, you don’t have to memorize your credit card number. But like all of these big numbers, your credit card number contains specific information, with each digit or set of digits meaning ...