McDonald's is working with law enforcement authorities after malicious hackers broke into another company's databases and stole information about an undetermined number of the fast food chain's customers.
The customer data likely includes full names, phone numbers, postal addresses and e-mail addresses. The spokeswoman didn't say what information was required for age confirmation, so it's not clear if customers simply checked a box saying they were adults or if they had to provide their date of birth.
"In the event that you are contacted by someone claiming to be from McDonald's asking for personal or financial information, do not respond and instead immediately contact us," reads the McDonald's note to customers. The number to call is 1-800-244-6227.