Hacking can expose payment-card information stored or handled by a business. Criminals may then bundle or sell the stolen data, and buyers can use it to attempt unauthorized purchases. Investigations by the FBI and U.S. Department of Justice document this chain, though they do not show how common it is today.
How stolen card data moves from a breach to fraud
Payment-card theft can begin when criminals compromise a business or its payment environment. In its account of the FIN7 cybercrime group, the FBI described attacks on businesses where customers used cards and reported that stolen payment-card data was offered for sale in underground markets. Other DOJ cases describe stolen card information being sold and then used to obtain goods or services fraudulently. These are documented case patterns, not a formula followed by every breach.
Law-enforcement materials use the term carding for criminal activity involving stolen card or financial information. A DOJ case account described carding forums as venues for trading information and selling stolen account data. This is a high-level description: it does not mean a particular breach necessarily involved a forum, or that every stolen card is sold rather than used directly.
Europol’s June 11, 2025 IOCTA announcement framed the broader cybercrime economy with the headline “Data is no longer just the target—it’s a commodity.” The announcement describes stolen data broadly; it does not provide a current global total for payment cards stolen by hacking and sold in criminal markets.
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What the reported case figures do—and do not—show
Historical investigations show that card theft and resale have occurred at substantial scale in particular cases. They are not estimates of the current worldwide market or of the number of cards stolen in a typical year.
| Source and year | Reported figure | What it refers to |
|---|---|---|
| FBI, 2018-era account | More than 15 million payment cards | The FBI’s reported total for FIN7 activity since 2015; many were offered for sale through online underground marketplaces. |
| U.S. Department of Justice, 2023 | Tens of thousands of U.S. victims | A case-specific description concerning the Skynet Market conspiracy and card information sold between 2016 and 2019. |
| U.S. Department of Justice, 2012 | Over 411,000 compromised credit and debit cards; 47 companies, government entities, and educational institutions | Figures reported in a follow-up on notifications from an undercover carding operation. |
| U.S. Department of Justice, 2008 | More than 40 million credit and debit card numbers | A retail hacking case announcement describing charges and alleged conduct at the time—not a present-day market count or a final adjudicated finding for every defendant. |
Among the sources cited here, there is no comparable current global estimate specific to credit-card data stolen by hacking and sold through criminal markets. The case totals above should be read only in their stated contexts.
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Why a card can be at risk even when it is still in your wallet
A breach of a business or payment environment can expose card information without anyone taking the physical card. The cardholder may learn of the problem only after an unfamiliar transaction appears or the issuer contacts them. Monitor account activity for small as well as large transactions; an unfamiliar charge should be reported promptly.
What to do if your card information may be exposed
- Check the account. Review recent transactions and continue watching for unfamiliar activity, including small charges.
- Contact the card issuer quickly. Report suspicious transactions using the issuer’s official contact channel and follow its instructions and dispute process.
- Ask whether to cancel and replace the card. If the card account is compromised, the issuer can advise whether a replacement is appropriate and what happens to recurring payments or pending transactions.
- Consider identity-protection steps if other personal information was exposed. A fraud alert or credit freeze addresses the risk of someone applying for new credit in your name; neither substitutes for contacting the issuer about charges on an existing card.
Credit and debit transactions can have different reporting deadlines and liability rules. The CFPB explains those distinctions in its consumer guidance; follow the current instructions for your card type and contact the issuer immediately rather than relying on a general deadline.
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Which response option addresses which risk?
| Option | What it helps address | Limits |
|---|---|---|
| Account monitoring and issuer notification | Unrecognized transactions on an existing card account; lets the issuer advise on disputes and replacement. | Monitoring does not itself stop a breach or guarantee that every fraudulent transaction is prevented. |
| Credit freeze | Limits prospective creditors’ access to your credit file and can help prevent new credit accounts opened in your name. Freezes are free at the three nationwide credit reporting companies under federal law. | Does not block charges on an existing card. You may need to lift the freeze when applying for new credit. |
| Fraud alert | Signals to creditors to take steps to verify identity before opening new credit. | Does not address unauthorized purchases on an existing card account. |
| Credit-monitoring service | May notify you of changes to your credit file, depending on the service’s scope. | It is primarily an alert, not prevention. The CFPB states: “Most monitoring services don’t protect your personal information from being stolen — they merely alert you after it has been stolen.” Services vary and may charge; free credit-report access and a freeze are alternatives. |
A freeze is useful for new-credit risk, not as a substitute for card-account response. If your immediate concern is a compromised card, issuer contact and transaction monitoring are the relevant steps.
Quick Recap
Best Value
- RFID Blocking Technology: This credit card holder is made of aluminum shells and ABS plastic, designed with RFID-blocking technology to help protect your credit, ID, debit, and driver's license cards from unauthorized scanning
- Slim Compact: Slim and compact design measures 4.3 x 3 x 0.86 inches, ideal for front pockets or purses
- Card Organizer: With 7 accordion-style slots, this wallet can hold up to 10 standard credit cards or over 20 business cards
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- Thoughtful Gift Idea: Makes a thoughtful gift for any occasion, combining functionality and style
Rank #4
- This credit card holder is made of aluminum shells, ABS plastic frame and clasp closure, RFID-blocking will protect your card data from RFID scanners and readers.
- The size is 4.33 x 2.95 x 0.75 inches, Slim and small exterior design, are fit in your front pocket,suitable for travel and business carrying.
- Latches safely and securely when not in use. Rounded corner wouldn't damage on your clothes. With 7 accordion Slots, Capacity for up to more than 10 credit cards or more than 20 business cards.
- There are various patterns to choose from on the aluminum shell, including flowers, animals, and landscapes, to match your versatile style.
- This is an ideal gift that can express your thoughtfulness and kindness. Suitable for any day you want to express love on, such as Valentine's Day, birthdays, Mother's Day, etc.
Sources for consumer action
- CFPB: What should I do if I see an unauthorized charge on my credit card?
- CFPB: What is a credit monitoring service?
- CFPB: What is a security freeze?
- CFPB: What is a fraud alert?
- Europol: 2025 IOCTA announcement
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