Watch your mail, be careful interacting with emails, know what you’re downloading, don’t open your financial accounts on public Wi-Fi networks, look carefully for signs of tampering at gas pumps and other automated credit card readers, and watch the news for data breaches at big companies-they happen more than you might think. What you can do to help protect your credit card information from being stolenīe mindful of all the ways thieves can get your credit card numbers and be aware of when you’re vulnerable. Many large institutions-from banks to major retailers-have reported that their customers’ data has been stolen. Data breaches are another way thieves can get your credit card number.