Credit cards of almost 1.1 million customers of Neiman Marcus are suspected to have been compromised as the retailers’ computers were hacked with a malicious software, reports say. The software fed into the Neiman system affected cards that were used from July 1, 2013, to Oct. 30, 2013, reports add. Also, the credit card companies noted that almost 2,400 unique cards have been fraudulently used at Neiman Marcus and Last Call stores, reports add.

Online customers seem not to be affected.

In the case of the fraudulently used cards, details of the card owners such as social security numbers, birth dates and PINs were not at risk of being exposed as the company does not use PIN pads in its stores, reports say. The company is providing a free year of credit monitoring and identity-theft protection is being offered to its customers who shopped between January 2013 to January 2014.