We live, work in, and are dependent on a networked world. That is why the Business Software Alliance, the Center for Democracy and Technology, the Internet Security Alliance, TechAmerica, and the U.S. Chamber of Commerce believe that the cybersecurity of our critical infrastructure must be a national priority. However, the complexity and interconnected nature of the Internet, and the ever‐evolving and sophisticated threat environment, put cybersecurity beyond the reach of any single entity. To secure our critical infrastructure, companies must work together, government must coordinate efforts, and industry and government must collaborate.