Dr. Jacques Bus, Head of Unit, Information and Communication Technology (ICT) for Trust and Security, DG Information Society at the European Commission outlined the European Union’s research priorities in seeking to ensure the security of critical infrastructures and networks, including the Internet. Presenting a U.S. perspectives were: Dr. David Boyd, Director, Command, Control, and Interoperability Division, U.S. Department of Homeland Security; Andy Purdy, former Acting Director of the National Cyber Security Division/US-CERT of the U.S. Department of Homeland Security and current President of DRA Enterprises, Inc.; and Dr. Herbert Lin, Chief Scientist on the Computer Science and Telecommunications Board of the National Research Council. Roger Cochetti, Group Director for U.S. Public Policy at Computing Technology Industry Association moderated the discussion.