The report was published Thursday by a global cyber intelligence firm that works with the U.S. Secret Service and the Department of Homeland Security.
There was no immediate word on how many customers may have been affected.
Target’s pre-Christmas security breach was significantly more extensive and affected millions more shoppers than the company reported last month.
The nation’s second-largest discount retailer said Tuesday that an unidentified number of gift cards sold over the holidays were not properly activated.
Target had previously claimed that its customers’ PIN information had not been breached.
U.S. Sen. Robert Menendez said consumers should be better protected and retailers who fail to safeguard information should be held accountable.
Target on Tuesday denied a report claiming that personal identification numbers were also stolen in a data breach that affected up to 40 million credit cards.
The Department of Justice is investigating the credit and debit card security breach that affected more than 40 million Target shoppers.
The fallout from what’s being called the second-largest credit card breach in U.S. history prompted a big change in business by the nation’s biggest bank.
Senator Schumer has asked how customers can know if target has really fixed the problem when the store refuses to tell us what the problem was.
In an attempt to regain shoppers’ confidence, Target is offering a 10 percent discount in all of its stores this Saturday and Sunday.
The chain said that customers who made purchases using their cards at its U.S. stores between Nov. 27 and Dec. 15 may have been exposed.
Checking your credit and debit card statements often and using cash whenever possible are just two ways to help keep the thieves away.
The Secret Service says it is investigating a credit- and debit-card data theft at Target stores.
Black Friday turned into Bad Friday for multiple shoppers across the country, including those at several stores in the Tri-State Area.