Costco, an American multinational organization and one of the world’s largest retailers, has alerted its clients by letter this month that their banking information may have been compromised when purchasing at one of its locations.
As per Wikipedia, Costco Wholesale Corporation is an American multinational business that operates a chain of membership-only big-box retail stores (warehouse clubs).
As of 2020, Costco was the fifth largest retailer in the world, and the world’s largest retailer of choice and prime beef, organic foods, rotisserie chicken, and wine as of 2016. In 2021, Costco was ranked #10 on the Fortune 500 rankings of the largest United States corporations by total revenue.
During a routine check, Costco staff detected a payment card skimming device in one of its locations, which led to the discovery of the breach.
The corporation disabled the device, alerted authorities, and is currently cooperating with law enforcement officers investigating the situation. Costco customers who were potentially affected by the attack received a notification letter stating:
We recently discovered a payment card skimming device at a Costco warehouse you recently visited.
Our member records indicate that you swiped your payment card to make a purchase at the affected terminal