How to Guard Against Credit Card Hackers

The cyber thieves who broke into the computer systems of giant merchant Target Corp. timed their scam perfectly.

Beginning just before the Black Friday shopping extravaganza and continuing through Dec. 15, they stole information from as many as 40 million credit and debit cards at the peak of the holiday selling season.

Customer names, card numbers, expiration dates and card security codes were compromised.

Companies and government prosecutors will do what they can, but consumers will have to become more vigilant about watching for the handiwork of tech-savvy crooks. U.S. law protects consumers from most of the financial responsibility for fraudulent transactions, but there’s still some risk … and a lot of hassle.

It pays to regularly monitor your credit and debit accounts. Anyone who used plastic to shop at Target stores between Nov. 27 and Dec. 15 should make a special effort to search their records for unauthorized charges.

It’s common for thieves to test stolen cards by first making small purchases, so watch for those. Immediately report unauthorized charges to the card issuer. If fraud is detected, the accounts involved will have to be closed and replaced.

You can sign up for online alerts or other card-monitoring services that many issuers offer to give customers immediate notice whenever a card is used. It’s a good idea to periodically change the PIN associated with cards (although Target said no PINs were accessed in its data breach).

Watch out for scammers who pretend to be with Target or a card issuer: Don’t give out personal information over the phone or online without confirming who is on the receiving end.

Pain in the neck? You bet.

It is incredibly frustrating when criminals manage to stay a step ahead of sophisticated companies and their customers. Target and its corporate peers have plenty of motivation to continually upgrade their security safeguards, the retailer is feeling the heat from understandably anxious customers.

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