Nearly 5 million customers affected in Neiman Marcus data breach

A security breach put the personal information of 4.6 million Neiman Marcus Group customers at risk.

The department store chain announced Thursday that a cyberattack in May 2020 compromised customer data, such as credit and debit card numbers and expiration dates, electronic gift card information, passwords, and security questions. Neiman Marcus did not say when it became aware of the breach but that it “is working quickly to determine the nature and scope of the matter” with the help of law enforcement and cybersecurity firm Mandiant.