P.F. Chang's acknowledged that a "security compromise" of customers' credit and debit card data occurred at some of its restaurants.
"We have concluded that data has been compromised," said CEO Rick Federico, in a prepared statement.
The admission comes just days after cybersecurity journalist Brian Krebs claimed that thousands of credit card and debit card numbers that appeared to have been stolen from P.F. Chang's restaurants earlier this year had gone up for sale.