Credit Card Security and Fraud Prevention

Most credit card fraud starts with a stolen number, not a stolen card. The habits that stop it, and exactly what to do if a charge isn't yours.

By CreditCardDebt Staff3 min read

Most credit card fraud today doesn’t involve anyone touching your physical card. Criminals get the number from a data breach, a fake website, a phishing text, or a skimmer hidden in a gas pump, then use it online. The good news: with a credit card, federal law caps your liability for unauthorized charges at $50, and most major issuers don’t charge you even that. Your job is mostly to spot fraud quickly and report it.

Scams are big business. People reported losing $15.9 billion to fraud to the FTC in 2025, up from about $12 billion the year before, and the FTC says most fraud is never reported at all.

How card numbers get stolen

Phishing texts and emails. “Your package couldn’t be delivered” or “Unusual activity on your account. Click here.” The link leads to a convincing fake site that asks for your card details.
Fake “fraud department” calls. The caller says they’re from your bank, knows a few real details, and asks you to “verify” a one-time code. That code lets them into your account.
Skimmers. Devices fitted over card slots at gas pumps and ATMs copy your card’s magnetic stripe. Tapping or inserting the chip is safer than swiping.
Data breaches. A retailer you shopped at gets hacked. There’s nothing you could have done; what matters is how fast you notice.
Fake online stores. Too-good-to-be-true prices, often promoted through social media ads.

Habits that actually help

Turn on transaction alerts. This is the single most effective step. Set your card app to notify you for every purchase, or every purchase over a small amount. You’ll see fraud within seconds rather than at the end of the month.

Use a credit card, not a debit card, online. Debit card fraud takes money straight out of your bank account while you wait for it to be resolved, and the protections are weaker if you’re slow to report it.

Use tap-to-pay or a mobile wallet. These send a one-time token instead of your actual card number, so a compromised terminal gets nothing reusable.

Never give a one-time passcode to someone who called you. Your bank won’t ask for it. Hang up and call the number on the back of your card.

Check URLs before entering card details. Type the store’s address yourself rather than clicking a link in a text or email.

Use virtual card numbers if your issuer offers them for subscriptions and unfamiliar sites. You can cancel one without replacing your actual card.

Freeze your credit. It won’t protect existing cards, but it stops criminals from opening new accounts in your name. Credit Freeze vs. Fraud Alert explains how.

If you spot a charge you didn’t make

Lock the card in your app, then call the number on the back of the card and report it. The issuer will cancel the card and send a new one.
Go through recent transactions with the representative. Fraudsters often test a card with a small charge first.
Update automatic payments with your new card number.
Follow up in writing if the issuer doesn’t remove the charge promptly. You have 60 days from the statement date to dispute a charge in writing and keep your full rights. How to Dispute a Credit Card Billing Error has the details.
Check your credit reports for new accounts you didn’t open. If you find any, report identity theft at IdentityTheft.gov.

Ignore anyone who offers to sell you “card loss protection.” Your liability is already capped by law, and the FTC warns that these offers are often scams themselves.

Debit cards are different

If someone uses your debit card, your liability depends on how fast you report it: up to $50 if you report within two business days of learning about it, up to $500 after that, and possibly unlimited if you wait more than 60 days after your statement is sent. That’s another reason to keep the debit card in your wallet and use a credit card for shopping.

For travel-specific precautions, see Traveling With Credit Cards. If a card is declined unexpectedly, What to Do When Your Credit Card Is Declined covers the security-hold scenario.

Sources

This article is for educational purposes and is not financial advice.