Oklahoma City, Okla. based SONIC Drive-In is the latest enterprise to have hackers help themselves to credit and debit card information. The fast-food chain acknowledged a breach of store payment systems.

Brian Krebs, in his blog KrebsOnSecurity, disclosed the breach of SONIC, with nearly 3,600 locations across 45 U.S. states, may have led to a new menu featuring millions of stolen credit and debit card accounts offered by dark web stores.

Krebs revealed the first hints of a breach came from multiple financial institutions who noticed a recent pattern of fraudulent transactions on cards previously used at SONIC. Krebs tied the incidents to a batch of some five million credit and debit card accounts put up for sale, in prices ranging from $25 to $50, on Sept. 18 by the so-called Joker's Stash, a credit card theft marketplace.

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Roy Urrico

Roy W. Urrico specializes in articles about financial technology and services for Credit Union Times, as well as ghostwriting, copywriting, and case studies. Also: writer/editor of a semi-annual newsletter for Association for Financial Technology since 1997 and history projects funded by the U.S Interior Department, National Park Service and Warren County (N.Y.).