Cyberwar has become one of the most-discussed and important topics in the IT security world during the last year. In this panel discussion at the Kaspersky Lab Cybersecurity Summit in New York, Eugene Kaspersky and Howard Schmidt, former White House cybersecurity coordinator, talked about the importance of sharing information on attacks on critical infrastructure, how serious the current cyberespionage attacks against government agencies and U.S. businesses are and what can be done to defend against them.