The company warned customers to check for unauthorized transactions and to change their personal identification numbers, or PINs. It didn’t say how many accounts may have been compromised.
But The New York Times, citing a high-ranking company official it did not name, reported that hackers had made unauthorized purchases on some customer credit cards.
The New York-based bookseller said in a statement Tuesday only one of the devices, known as PIN pads, was tampered with in each of the 63 stores.
The stores are in California, Connecticut, Florida, Illinois, Massachusetts, New Jersey, New York, Pennsylvania and Rhode Island. (see the complete list below)
All the PIN pads in its nearly 700 stores nationwide were disconnected on Sept. 14 after the company learned of the tampering. Federal authorities are helping in its investigation.
Barnes & Noble said it is working with banks and card issuers to identify compromised accounts so that additional fraud-protection measures can be taken "
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