With 3,500 locations in 45 states across the US, fast-food chain Sonic Drive-In confirmed falling victim to a data breach that exposed customer credit and debit card numbers. The company was informed about a potential data breach by its credit card processor, after detecting a pattern in a number of fraudulent transactions.
The company hasn’t revealed the exact number of hacked cards, but security researcher Brian Krebs first reported that he came across millions of card numbers for sale on a dark web marketplace called Joker’s Stash, including some that had been recently used at a number of Sonic locations.
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