Another retail giant has announced a data breach that could affect its customers.

Neiman Marcus confirmed that its security has been breached, and credit card information may have been stolen from its customers.

The retailer says information may have been stolen from customers who shopped at their stores in mid-December. It did not specify how many customers were affected.

The discovery was made on Jan. 1.

The revelation of a new hacker breach come on the heels of Target's announcement that 70 million customers were affected during a December cyber-attack. Target had originally said debit and credit data hacks only affected 40 million people.