NEW YORK (CNNMoney) -- About 1.1 million customers were impacted by a breach of luxury retailer Neiman Marcus payment systems that lasted three months, the company said.
Malicious software scooped up customer card information between July 16 and Oct. 30 of last year, Neiman Marcus Group President and CEO Karen Katz said in a message on the retailer's website.
Visa, MasterCard and Discover reported 2,400 cards were then used fraudulently, Katz said.
Neiman Marcus aknowledged earlier this month its systems had been breached, but did not disclose a number of customers affected.
The Neiman Marcus incident began and ended before a much larger breach at discount retailer Target. Up to 110 million Target customers had their personal information stolen during the busy holiday shopping season, Target said.