The United Parcel Service (UPS) has discovered a computer breach at 51 stores in 24 states.
Customer's names, postal addresses, payment card information, and email addresses were compromised between January 20 and August 11, 2014.
Each UPS store is run on a separate computer system, which may have limited the computer breach.
Missouri stores were not affected, however Illinois stores are reporting the breach. UPS says no fraud has been discovered.
A list of all the 51 locations is available at www.theupsstore.com/security.