P.F. Chang's China Bistro said on Monday the U.S. Secret Service had alerted the company to a possible credit card security breach at 33 of its restaurants. Its credit card security system was compromised and the hacker may have made off with the name, number and expiration date on certain credit and debit cards, the company said in a statement. PF Chang's published a list of restaurants it believes was affected by the breach, which includes locations in California, Florida, New York, Pennsylvania, New Jersey and Virginia. See the full list here.