NEW YORK (CBSNEWS.COM) – Macy’s says cyberthieves hacked the accounts of thousands of the retailer’s online customers, compromising people’s full names as well as their credit card numbers and expiration dates.

The attack, which occurred over roughly six weeks between the end of April and the beginning of June before being shut down, affected consumers registered on Macys.com or Bloomingdales.com.

READ MORE: Dallas County Sheriff Needs Help Identifying Truck Involved In Hit & Run With Deputies

Logins and passwords were taken from sites unrelated to the retailers and then used to access data on both sites.

READ MORE: Man Charged In Burning, Dismembered Bodies Case, Jason Thornburg Admits He Killed Another 

“We have investigated the matter thoroughly, addressed the cause and, as a precaution, have implemented additional security measures,” a Macy’s spokesperson said in a statement.

MORE NEWS: CBP Officers Intercept $24M In Methamphetamine At Camino Real Cargo Facility

♦♦♦ Check Out The Full Story On cbsnews.com ♦♦♦