For the second time in three months, Dunkin’ Donuts has been the target of credential stuffing attacks.
While Dunkin’ didn’t experience an internal breach, its aid in a notification letter that “third-parties obtained usernames and passwords through other companies’ security breaches and used this information to log into some Dunkin’ DD Perks accounts.”
The company said it was alerted on Jan. 10 by one of its security vendors that hackers might have tried to log in to DD Perks accounts. “We believe that these third-parties obtained usernames and passwords from security breaches of other companies” and then used the credentials “to try to break in to various online accounts across the Internet.” While the donut chain’s security vendor successfully stopped most attempts, the company warned customers that the miscreants might have succeeded in some cases and accessed information that customers might have included in their Perks accounts like account numbers, QR codes, names and email addresses.
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