P.F. Chang’s says data breach affected 33 U.S. restaurants. More details and restaurant locations that may been compromised:

http://www.pfchangs.com/security/

Thanks Sreedhar for the tip!

P.F. Chang’s Security Update
www.pfchangs.com
We will continue sharing important details once they have been confirmed by a team of third-party forensic experts. This website remains the best source of information on the investigation into the compromise and our ongoing response.