In December, US retail giant Target confirmed up to 40 million credit card accounts were at risk after customer data was stolen by hackers. Now, according to Brian Krebs — the journalist that first reported the Target security breach — a second retailer has suffered a similar attack. Krebs on Security reports that hackers have stolen customer credit card data from the Dallas-based fashion chain Neiman Marcus. Krebs says his sources in the finance industry started to suspect a large retailer had been hacked after a December surge in fraudulent debit and credit card charges. The payments, Krebs says, were traced to cards that had been recently been used at Neiman Marcus brick-and-mortar stores.