By Maggie Shiels Technology reporter, BBC News, San Francisco All Americans have a role to play in securing cyberspace says the DHS Homeland Security secretary Janet Napolitano has admitted there is an urgent need to step up efforts to protect Americans from cyber attacks.Her comments at the world's largest security conference hosted by vendor RSA, comes as the cyber threat grows ever more sophisticated. Incidents like the attack on Google in China have underscored the issue. "We need to do more and we need to do it faster," Secretary Napolitano told the audience in San Francisco. She said the government was working with a "sense of urgency" and that the Department of Homeland Security, DHS, "stands at a very important juncture". Secretary Napolitano stressed that even in working with the private sector, "again the sense of urgency needs to be increased". Michael Chertoff, former DHS secretary, under President George W Bush, agreed.[Read more...]