12/13/2010 09:42 am ET | Updated May 25, 2011

McDonald's Hacked: Customer Data Stolen, Chain Tells Customers

The personal data of McDonald's customers -- including e-mails and phone numbers -- has been "obtained by an unauthorized third party," the chain told its most loyal burger fans.

Late Friday, McDonald's sent an e-mail to customers notifying them of the hacking, and warned them to be cautious of any person claiming to be from "McDonald's asking for personal or financial information."

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