Never lend your credit card or account number to a friend or relative.
If your credit card is lost or stolen, report it immediately to your card issuer.
Write your credit card number on a check only when paying your credit card bill.
If you find a mistake on your credit card bill, immediately write a letter to your card issuer to describe the problem.

One reason people use credit cards is the convenience they offer. However, the ease with which these cards can be used also makes them very attractive to thieves. This section gives you ways to help protect your cards, explains what to do if any of your cards are lost or stolen, and covers billing errors and questionable charges, unauthorized charges, online shopping, and signing up for a card registration service.
Under the Fair Credit Billing Act, you are protected whether you use your card online, over the phone, through the mail, in person, or at a store. If you find any questionable charges or billing errors on your monthly credit or charge card statement, you may dispute the item, and provided you follow the guidelines for resolving a dispute, you may withhold payment for that amount while the issue is being researched. The issue might be a charge for the wrong amount, for something you didn't accept, or for a product or service that wasn't provided. [top]
To dispute a charge:
If your credit card is used without your authorization, and the unauthorized use occurs before you report your card missing, you can be held liable for up to $50 per card. If you report the loss of a card before it is used, the card issuer cannot hold you responsible for any unauthorized charges. [top]
Whether you're interested in computer software or compact discs, online shopping can give new meaning to convenience and choice. Should you decide to pay by credit card, your online transaction will be protected by the Fair Credit Billing Act just as other transactions are. But before you visit your favorite online store, make your online shopping experience safe.
Security is a must and begins with your connection and your browser. Unsecured information sent over the Internet can be intercepted. That's why a secure browser—one that encrypts or scrambles purchase information—is important. If you're unsure whether your browser is secure, check with your Internet service provider.
When you're ready to make an online purchase, pay close attention to the information you need to enter. Be cautious if you're asked to supply personal information, such as your Social Security number or your mother's maiden name. If you have any doubts, cancel your order immediately. [top]
Many companies offer credit card registration services, either for a fee or as a customer benefit. Sign up for the service, and in the event that any or all of your registered credit cards are lost or stolen, you don't have to worry. Make one call to the service, and each issuer will be notified. If you decide to use the service, compare the benefits and terms and look for the one that will best suit your needs. Read the service contract carefully to check the company's obligations and your potential liability. [top]