CHICAGO - An Illinois man filed a class complaint in the U.S. District Court for the Northern District of Illinois on June 30 against P.F. Chang's China Bistro Inc., an Asian restaurant chain, alleging the company's security failures caused approximately 7 million credit cards used by customers to be compromised (Lucas Kosner, et al. v. P.F. Chang's China Bistro, Inc., No. 14-4923, N.D. Ill.).