BRISBANE, Calif.--(BUSINESS WIRE)--bebe stores, inc. (NASDAQ:BEBE) announced today that the Company recently detected suspicious activity on computers that operate the payment processing system for its stores. In response, the Company immediately engaged a leading computer security firm and worked with them to block the attack from continuing. Based on its investigation to date, the Company believes the attack was focused on and limited to data from payment cards swiped in its U.S., Puerto Rico