Dairy Queen says a data security breach has impacted nearly 400 of its stores in the nation, including 17 locations in Missouri.

The company says customers who ate at those 17 stores in August might have had their names, payment card numbers and expiration dates exposed to hackers.

The company is offering free identity repair service to impacted customers.

A list of the impacted stores and the dates their security was breached is available on Dairy Queen’s website.