This information includes contact details, payment card numbers, gift card numbers, and usernames and passwords, said Neiman Marcus.
Of the 4.6 million customers likely to have been affected, “approximately 3.1 million payment cards and virtual gift cards have been affected, of which more than 85% are expired or invalid,” according to a statement from hurry.
Neiman Marcus said he alerted law enforcement and worked with cybersecurity firm Mandiant to investigate the situation.
“At Neiman Marcus Group, customers are our top priority,” said Geoffroy van Raemdonck, CEO of the company, in a press release. “We are working hard to support our customers and answer questions about their online accounts. We will continue to take steps to improve the security of our system and protect information.”
The company said it had no evidence that its subsidiaries Bergdorf Goodman or Horchow were affected.
– Jordan Valinsky of CNN Business contributed to this report.