Costco Wholesale Corporation has warned customers in notification letters sent this month that their payment card information might have been stolen while recently shopping at one of its stores.
The retail giant (also known as Costco Wholesale and Costco) is an American multinational that operates a large chain of membership-only retail stores, the fifth-largest retailer worldwide, and the tenth-largest corporation in the US by total revenue according to Fortune 500 rankings.
It has 737 warehouses worldwide, and it also operates e-commerce websites targeting multiple world regions, including the Americas, Europe, and Asia.
Costco discovered the breach after finding a payment card skimming device in one of its warehouses during a routine check conducted by Costco personnel.