The techniques used by hackers to access credit and debit card data from Target shoppers suggests that the cyber crooks have found a troubling new way to stay ahead of the latest fraud detection processes.
Security blogger Brian Krebs, who first reported the Target data breach news earlier this month, said that compromised cards are being marketed online with information on the state, city, and ZIP code of the Target store where they were used.
Fraud experts say the location information will likely allow buyers of the stolen data to use spoofed versions of cards issued to people in their immediate vicinity, Krebs wrote. "This lets crooks who want to use the cards for in-store fraud avoid any knee-jerk fraud defenses in which a financial institution might block transactions that occur outside the legitimate cardholder's immediate geographic region," he said.
This is believed to be the first time that security experts have observed hyper-localized selling of stolen credit and debit card information following a retail breach.
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