Costco customers complain of fraudulent charges before company confirms card skimming attack

Costco has sent out breach notification letters to an unknown number of victims after multiple people took to social media to complain about fraudulent charges connected to the company.

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First reported by Bleeping Computer, the letter says payment card information was compromised through a card skimming device at certain Costco locations. 

“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 during the time the device may have been operating,” Costco said in the letter. 

“If unauthorized parties were able to remove information from the device before it was discovered, they may have acquired the magnetic stripe of your payment card, including your name, card number, card expiration date and CVV. We recommend that you check your most recent bank and or credit card statement

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