Dunkin Brands Group Inc. has issued a notification letter to some DD Perks account holders who may have experienced unauthorized access to their accounts, the company said in an emailed statement to Bloomberg.
The company said its internal system did not experience data security breach. But a security vendor informed the company that third-parties who obtained account holders’ login information through outside security breaches may have used it to log into accounts.
Dunkin forced a password reset that required potentially impacted account holders to log out and log back into their accounts.
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