The National Strategy to Secure Cyberspace outlines an initial framework for both organizing and prioritizing efforts. It provides direction to the federal government departments and agencies that have roles in cyberspace security. It also identifies steps that state and local governments, private companies and organizations, and individual Americans can take to improve our collective cybersecurity. The Strategy highlights the role of public-private engagement. The document provides a framework for the contributions that we all can make to secure our parts of cyberspace. The dynamics of cyberspace will require adjustments and amendments to the Strategy over time.