According to a company statement, hackers used malware to access the payment card processing systems in MAPCO stores between March 19-25, April 14-15, and April 20-21, 2013.
MAPCO says anyone who used a credit or debit card to make a payment at any of its locations, including MAPCO Express, MAPCO Mart, East Coast, Discount Food Mart, Fast Food and Fuel, Delta Express, and Favorite Markets locations in Tennessee, Alabama, Arkansas, Georgia, Kentucky, Mississippi and Virginia, may have been affected.
"As soon as we learned of the malware, we took steps to disable the malware and further strengthen the security of our payment card processing systems," the company said in a statement. "We also began working with a nationally-recognized computer forensics investigation firm and the payment card associations to determine exactly what happened and what information may have been compromised."
Customers who suspect that their credit card information may have been compromised are advised to contact their bank, credit union, or credit or debit card company. Anyone with questions should call (877) 297-2081 for more information.