Target cyber breach hits 40 million payment cards at holiday peak

By Jim Finkle and Dhanya Skariachan BOSTON (Reuters) - Target Corp said hackers have stolen data from up to 40 million credit and debit cards of shoppers who visited its stores during the first three weeks of the holiday season in the second-largest such breach reported by a U.S. retailer. The hackers worked at unprecedented speed, carrying out their operation from the day before Thanksgiving to this past Sunday, 19 days that are the heart of the crucial Christmas holiday sales season. Target, the third-largest U.S. ...

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