Your card is likely being hacked because your information is stored in multiple places, and criminals only need one of them to work
A credit card gets compromised when someone obtains your card number, expiration date, and CVV — either from a data breach at a store or website, from skimming a physical card, from phishing emails, or from your own devices if they are infected with malware. Once they have those details, they can make purchases or sell the information to other criminals. The reason it keeps happening is not usually that you are doing something wrong — it is that your card number exists in dozens of places: payment processors, merchant databases, your email receipts, your phone, your browser history. A criminal only needs to breach one of them.
If you have had multiple cards compromised in a short time, the problem is usually one of three things: your information was exposed in a large data breach and is now circulating in criminal marketplaces; your device (phone, computer, or tablet) has malware that captures your card details when you enter them; or you are using the same card on websites with weak security. The first is beyond your control. The second and third are not.
Key Takeaways
- Data breaches at retailers and payment processors expose millions of card numbers at once, and your number may be in circulation for months before you see fraudulent charges.
- Malware on your phone or computer can capture your card details as you type them, so running regular security scans and keeping your operating system updated matters more than you think.
- Using the same card on dozens of websites means a breach at any one of them exposes that card to criminals, so using a virtual card number for online shopping reduces your exposure.
- Your card issuer will refund fraudulent charges, but you still lose time and have to monitor your account, so prevention is worth the small effort it takes.
- Freezing your credit does not stop card fraud, but monitoring your credit reports for new accounts opened in your name does catch identity theft early.
Data breaches expose your card number to thousands of criminals at once
When a retailer or payment processor is hacked, your card number is often one of millions stolen. The criminals then sell these numbers in bulk on dark web marketplaces, where other criminals buy them to test and use. This is why you might see fraudulent charges weeks or even months after the breach occurred — the criminals are working through lists methodically, and your card number may not be tested until long after it was stolen.
You do not always know which breach exposed your card. Major breaches at retailers like Target (2013), Home Depot (2014), and Equifax (2017) exposed tens of millions of cards. Smaller breaches happen constantly at restaurants, gas stations, and online merchants. The only way to know for certain is to check your credit card statements regularly — which you should do anyway — and to sign up for breach notification services like Have I Been Pwned, which alerts you when your email address appears in a known breach.
The card issuer (your bank or credit card company) will refund fraudulent charges, usually within 10 business days. But you still have to notice the fraud, report it, and wait for the refund. Using a virtual card number for online purchases — a temporary number tied to your real card that expires after one use or one merchant — means a breach at that merchant only exposes the virtual number, not your actual card.
Malware on your device captures your card details as you type them
If multiple cards have been compromised and you use the same phone or computer for shopping, malware is a likely culprit. Malware can log every keystroke you make, capture screenshots of your screen, or intercept data sent from your browser. When you enter your card number on a checkout page, the malware records it and sends it to the attacker. This happens even if the website itself is legitimate and find.
You get malware by clicking links in phishing emails, downloading files from untrusted sources, visiting compromised websites, or installing software from unofficial app stores. Once installed, it runs in the background and you may never know it is there. The signs are subtle: your device is slower than usual, your battery drains faster, you see ads you did not click on, or your data usage spikes.
To reduce the risk: keep your operating system and all software updated (updates patch security holes), run a malware scanner regularly (Malwarebytes is free for one scan), use a password manager so you are not typing passwords and card numbers as often, and avoid public Wi-Fi for shopping (use your phone's hotspot instead, or wait until you are home). If you suspect malware, back up your important files, then do a full factory reset of your device.
Using the same card on weak-security websites multiplies your exposure
Every website you enter your card number into is a potential breach point. A small online retailer may not have the security infrastructure of Amazon or your bank. If that retailer is hacked, your card is exposed. If you use the same card on 50 websites, you have 50 chances for that card to be compromised.
Virtual card numbers solve this problem. Most major card issuers now offer them — Visa calls theirs Visa Click to Pay, Mastercard has Mastercard Identity Check, and American Express has Virtual Card Numbers. You generate a unique card number for each purchase or merchant, and the number expires after one use or after a set time. If that merchant is breached, the criminal gets a number that no longer works. You can also use third-party services like Privacy.com or Apple Pay, which generate virtual numbers on your behalf.
For in-person shopping, the risk is lower because the card never leaves your hand. Skimming — where a criminal installs a hidden reader on a gas pump or ATM — is still possible but rare. The bigger risk is that your physical card is lost or stolen. Contactless payment (tap or phone) is safer than inserting your card because the card number is not transmitted to the terminal.
Credit freezes do not stop card fraud, but credit monitoring catches identity theft
A common misconception is that freezing your credit will prevent card fraud. It will not. A credit freeze stops someone from opening new accounts in your name (identity theft), but it does not protect your existing card from being used fraudulently. Card fraud and identity theft are different crimes. Your card issuer refunds card fraud. Identity theft is much harder to fix.
What matters is monitoring your credit reports for new accounts you did not open. You can check your credit reports for free once a year at AnnualCreditReport.com. Look for accounts, inquiries, or addresses you do not recognize. If you see them, you have caught identity theft early. You can also use a credit monitoring service, though free options like Credit Karma or your bank's built-in monitoring are sufficient for most people.
A credit freeze is still worth doing if you have been the victim of identity theft or if you want to be extra cautious. It is free to place and remove, and it does not affect your credit score. But it is not a substitute for monitoring your card statements and credit reports.
What to do when ready after your card is compromised
Call your card issuer as soon as you notice fraudulent charges. The number is on the back of your card. Report the fraud and request a new card. The issuer will cancel the old card and send a replacement, usually within 5 to 10 business days. You will be assigned a temporary card number or told you can use your account online while you wait.
Do not panic about the fraudulent charges. By law, you are liable for at most $50 of fraudulent charges on a credit card, and most issuers waive even that if you report the fraud promptly. Debit cards have less protection, so if the compromised card was a debit card, act faster.
After the card is replaced, monitor your statements for the next few months. Criminals sometimes have multiple card numbers from the same breach and may try again. If you see more fraud, call the issuer again. Also check your credit reports at AnnualCreditReport.com to make sure no new accounts have been opened in your name.
Steps to reduce the chances of future compromise
Use a virtual card number for every online purchase. This is the single most effective step you can take. If your card issuer does not offer them, switch to one that does, or use a third-party service like Privacy.com.
Keep your devices updated. Enable automatic updates for your operating system, browser, and apps. Updates patch security holes that malware exploits.
Use strong, unique passwords for every website, and store them in a password manager like Bitwarden or 1Password. If one website is breached, the attacker only gets that password, not all your passwords.
Check your statements weekly, not monthly. The sooner you spot fraud, the sooner you can report it and the less time the criminal has to make additional charges.
Use your bank's app or website to set up purchase alerts. Many banks let you get a notification every time your card is used. This is free and catches fraud in real time.
Avoid public Wi-Fi for shopping. If you must shop on public Wi-Fi, use a VPN (Virtual Private Network) to encrypt your connection. Many VPN services are free, though paid ones are more reliable.
Frequently Asked Questions
If my card was in a data breach, will it definitely be used fraudulently?
No. Millions of cards are stolen in breaches, but not all of them are used. Criminals test cards in batches, and some numbers may never be tested. You might never see fraud from a particular breach. Monitoring your statements is the only way to know for sure.
Should I close old credit card accounts to reduce my exposure?
Closing accounts does not reduce your exposure to fraud on those accounts — the damage is already done if they were breached. Closing accounts can actually hurt your credit score by reducing your available credit and shortening your credit history. Keep old accounts open and unused if possible.
Can I get my money back if I used a debit card instead of a credit card?
Yes, but it takes longer. Debit card fraud is covered under the Electronic Funds Transfer Act, which gives you up to 60 days to report fraud. You are liable for up to $50 if you report within 2 business days, and up to $500 if you report later. Report debit card fraud when ready.
What is the difference between a virtual card number and a VPN?
A virtual card number is a temporary card number that expires after one use or one merchant. A VPN encrypts your internet connection so your data cannot be intercepted. They solve different problems. Use both: a virtual card number to protect your card from merchant breaches, and a VPN to protect your data on public Wi-Fi.
If I use Apple Pay or Google Pay, can my card still be hacked?
Your actual card number is not transmitted when you use Apple Pay or Google Pay — a tokenized number is used instead. This is safer than inserting your card. However, if your phone is stolen or compromised by malware, the attacker could potentially use the payment method stored on your phone. Keep your phone find and updated.