Neiman Marcus Group said data from more than a million of its customers' payment cards may have been nabbed by hackers who breached the upscale retailer's system last year.
The company said malicious software was surreptitiously installed to collect, or "scrape," payment card information from July 16 to Oct. 30, leaving 1.1 million cards "potentially visible" to hackers.
Though the investigation is ongoing, Neiman Marcus said it has been informed by Visa, MasterCard and Discover that 2,400 cards have since been used fraudulently.
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