The conference was held in Okayama Convention Center near Okayama Station. We could see that the attendees and presenters were fewer than CSS 2009, which was the largest CSS Conference in history. We also felt that, in the presentations, content about applications of system and network security were stronger than before. The conference was held along with NWS2010. There were many papers about anti-virus policies. There was also a session about sensor network and client computing.