McDonald’s Corp. MCD +0.94% said hackers stole some data from its systems in markets including the U.S., South Korea and Taiwan, in another example of cybercriminals infiltrating high-profile global companies.
The burger chain said Friday that it recently hired external consultants to investigate unauthorized activity on an internal security system, prompted by a specific incident in which the unauthorized access was cut off a week after it was identified, McDonald’s said. The investigators discovered that company data had been breached in markets including the U.S., South Korea and Taiwan, the company said.
In a message to U.S. employees, McDonald’s said the breach disclosed some business contact information for U.S. employees and franchisees, along with some information about restaurants such as seating capacity and the square footage of play areas. The company said no customer data was breached in the U.S., and that the employee data exposed wasn’t sensitive or personal. The company advised employees and franchisees to watch for phishing emails and to use discretion when asked for information.