Neiman Marcus has 79 stores and reported total sales of $1.1 billion in Q4 2013. The high-end retailer confirmed a data breach that could represent a risk its customers. The company is working with the U.S. Secret Service to investigate a hacker break-in that has exposed an unknown number of customer cards. The incident occurs a few weeks after the clamorous data breach at US giant retailer Target. Cybersecurity expert Brian Krebs confirmed a surge in fraudulent credit and debit charges on cards that had been used at Neiman.”]