Barnes & Noble says hackers may have stolen customer data

Barnes & Noble, the country’s largest bookseller, said data thieves hacked into payment devices and may have stolen customer credit and debit card information at 63 of its stores nationwide, including 20 in California.

Hackers planted bugs in a single card reader at each of the stores, the company said. Customers swipe their payment cards through the machines and, if using a debit card, enter their personal identification number.