Goodwill Industries of Kansas has released a list of twenty stores across the state affected by a security breach it announced in July. The charity said it confirmed the breach after an extensive investigation.

Goodwill said the stores affected used the same third-party vendor to process customer payment cards. The charity said the vendor's system was attacked by malware and customers' names, payment card numbers and expiration dates were exposed. There was no evidence that other personal information, such as addresses or PINs, was affected by this issue.

Goodwill said it has been working with federal law enforcement authorities and payment card brands to sort out the facts.

Goodwill said it has since stopped using the vendor.

The breach took place from between February 10, 2013, and August 14, 2014 and affected the following stores:

Andover, 415 S. Andover Rd.
 Derby, 1247 N. Rainbow Dr.
 El Dorado, 2336 W. Central   
 Emporia, 904 E. 12th Ave
 Garden City, 2005 E. Kansas
 Great Bend, 1705 Main St.
 Hays, 1010 E. 43rd St.
 Hutchinson, 1707 N. Waldron
 Junction City, 1008 W. 6th
 Maize, 3737 N. Maize Rd.
 Salina, 2640 Planet Ave.
 Wichita, 3636 N. Oliver    
 Wichita, 5025 S. Broadway        
 Wichita, 5525 W. Central          
 Wichita, 1625 S. Rock Rd.          
 Wichita, 2172 N. Amidon           
 Winfield, 1908 E. 9th Ave.

For a national list, visit the Goodwill Industries International website.

Anyone with questions is encouraged to call 1-800-GOODWILL.