Michael Riley reports:
Hackers who raided the credit-card payment system of Neiman Marcus Group Ltd. belong to a sophisticated Russian syndicate that has stolen more than 160 million credit-card numbers from retailers over seven years, according to people with knowledge of the matter.
The Russian group is well known to U.S. authorities, who have indicted several members and linked it to pillaging more than 100 companies, including Citigroup Inc. and J.C. Penney Co.
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