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Stolen Credit Card Numbers

5 min read
Last Updated: March 5, 2026

Table of contents

Key Takeaways

  1. Thieves can steal credit card numbers through the mail, email, public Wi Fi networks, and data breaches.

  2. Review your credit card statements, credit report, and personal information so you can act quickly if you see anything suspicious.

  3. If someone steals your card or credit card details, immediately alert your credit card issuer.

When someone steals your credit card number, it’s a violating and disturbing experience. By understanding the tools thieves might use to access your persona data, you can protect your information.

 

Here’s how people commit credit card theft and what you can do to protect your card.

How do credit card numbers get stolen?

Personal documents

While protecting yourself online is vital, you should also protect yourself from old-fashioned hazards like financial paperwork. Someone could take sensitive documents like a bill, bank statement, or credit card statement from your mailbox or even your trash. Shred these papers before throwing them out to protect yourself from identity theft and fraud. This blocks thieves’ access to your:

  • Credit card account number (even the last four digits can be used by thieves)
  • Social Security number
  • Full name and address
  • Transaction information

Phishing

Phishing emails and phone calls are common tactics that trick people into sharing sensitive personal and financial information. The caller or sender will try to convince victims to either offer up that information directly or click a bad link that installs malware on their computers.

 

If someone calls or emails you claiming to be a financial institution requesting personal information urgently, it’s unlikely to be legitimate. Most financial institutions never ask you to send your information via email or phone.

Keep an eye out for generic email addresses that have misspellings or otherwise don’t appear to come from your financial service provider. Likewise, always confirm the phone number if a financial institution calls you. Unaffiliated email addresses and phone numbers often point to phishing.

Malware

Malware is a type of phishing software designed to take your information, access your network, or otherwise disrupt use of a device. Be careful what you click on, as cybercriminals trick users into installing malware themselves by getting you to click on an unsafe link.

One type of malware records every keystroke, including your credit card number, as you type it into an order form. Don’t download anything on your computer unless you have validated or otherwise trust where it’s coming from.

Public Wi-Fi

Public Wi-Fi may be convenient, but it can open you up to the possibility of fraud. Public networks are unsecured, which leaves your information vulnerable to many security breaches. If someone breaches the Wi-Fi network, your device can be vulnerable too.

 

How to stay safe on public Wi‑Fi? Don’t open sensitive documents or financial websites on public networks—hackers can use these networks to access your account numbers and passwords.

Card skimming

According to the FBI, card skimmers are devices that thieves attach to ATMs or payment terminals to capture the digital information on your card. The perpetrator may use that information to create fake debit or credit cards or access your data.

Data breaches

A data breach occurs when an unauthorized person accesses sensitive or protected data from a business. Often, hackers access customer or client data from large institutions such as banks or retailers. They might sell information like credit card numbers, names, passwords, and Social Security numbers. Alternatively, they might use it themselves to commit identity theft or make fraudulent transactions.

How to protect your credit card information from being stolen

A few extra security measures could make your credit card numbers and other confidential information less vulnerable to fraudsters:

  • Shred or rip up paperwork that includes personal data before throwing it away.
  • Lock your mailbox to protect bills, bank statements, healthcare records, and other sensitive documents.
  • Take caution when interacting with your emails, especially when opening documents or clicking links
  • When you need to use your debit card to get cash, find an indoor, well-lit ATM.
  • Watch the news for data breaches at big companies—they happen more than you might think.
  • Ask your credit card issuer or bank if they offer security alerts, so you are notified as soon as fraudulent activity is detected.
  • If you suspect someone has accessed your card number, freeze your account and contact your credit card company right away. They will cancel the card and send you a replacement card.

If you find a fraudulent credit card charge on your Discover® card, freeze your account in seconds with an on/off switch either on the mobile app or website to prevent new purchases and cash advances.1

Additional credit monitoring services may be available through your bank to increase your security, alerting you to changes in your credit reports, new bank accounts in your name, and more.

 

Most credit cards now use chip technology and a magnetic strip, as chips are more difficult to steal credit card info from. However, the switch hasn’t eliminated credit card fraud or identity theft. It’s important to keep your eyes on your credit card statement, credit report, and credit score, so you’ll be aware of any sudden changes that could indicate identity theft.

What to do if your credit card information is stolen

According to the Consumer Financial Protection Bureau, federal law limits the amount of money you’re liable for in case of a lost or stolen card. However, your protection depends on how quickly you report the missing card.

Many card companies also offer protection for cardmembers and limit their liability for losses. If someone steals your credit card information, make sure to contact your credit card company immediately.

Did you know?

If you’re a Discover cardmember, you’re covered under the $0 Fraud Liability Guarantee. You’re never held responsible for unauthorized purchases on your Discover Card.2

The Federal Trade Commission (FTC) recommends that consumers also let the three major credit reporting agencies know about a stolen card or other fraud. Then, they should file an initial fraud alert on their credit files. The FTC has published a detailed consumer-friendly guide to handling many forms of identity theft and fraud.

The bottom line

Millions of American consumers have had stolen credit cards at one point. While it can be frightening to experience, there are ways to safeguard your information from criminals. If, even with precautions in place, someone accesses your card number, have a plan to take action quickly to limit your losses and help regain control.

Next steps

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