PHILADELPHIA (CBS) – Neiman Marcus confirms to CBSPhilly it is working with the U.S. Secret Service to investigate the possible theft of customer credit card information.

The confirmation came after security blogger Brian Krebs at (See Related Story) reported the possible data breach.

Neiman Marcus was informed by their merchant processor in mid-December of potentially unauthorized payment card activity that occurred following customer purchases at Neiman Marcus Group stores, according to spokesperson Ginger Reed.

Reed released a statement which read, in part:

“We informed federal law enforcement agencies and are working actively with the U.S. Secret Service, the payment brands, our merchant processor, a leading investigations, intelligence and risk management firm, and a leading forensics firm to investigate the situation. On January 1st, the forensics firm discovered evidence that the company was the victim of a criminal cyber-security intrusion and that some customers’ cards were possibly compromised as a result. We have begun to contain the intrusion and have taken significant steps to further enhance information security.”

“The security of our customers’ information is always a priority and we sincerely regret any inconvenience,” Reed said.

Reed also says Neiman Marcus is taking steps to notify customers whose cards they know were used fraudulently after making a purchase at our store.

Stay with for the latest on this developing story.

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