The array of dangers from cyberspace—cybercrime, cyberterrorism and cyberespionage—have become as difficult and complex a set of national security challenges as the United States and other democratic countries have faced in the last generation. The members of the Aspen Strategy Group met over five days in early August 2011 in Aspen, Colorado to examine the many dimensions of cyberspace. We were joined by many of the most knowledgeable experts in the field and several senior government officials—National Security Agency Director General Keith Alexander, Deputy Secretary of Defense Bill Lynn, State Department Cyber Issues Coordinator Christopher Painter, and Deputy Secretary of Homeland Security Jane Holl Lute—responsible for developing an American strategy on this critical issue. During our discussions, we heard and discussed compelling and thoughtful presentations on the cyber challenge that amount to a wake-up call for all Americans as well as our government. We hope this meeting and the subsequent policy book will ring the village bell to warn our country and others of the present and future dangers within the cyber domain. Click here to purchase the publication from this meeting.