This webpage from the National Institute for Standards and Technology (NIST) provides the organization's Cybersecurity Framework. From the webpage: "Recognizing the national and economic security of the United States depends on the reliable function of critical infrastructure, the President issued Executive Order (EO) 13636, Improving Critical Infrastructure Cybersecurity, in February 2013. The Order directed NIST to work with stakeholders to develop a voluntary framework - based on existing standards, guidelines, and practices - for reducing cyber risks to critical infrastructure. The Cybersecurity Enhancement Act of 2014 reinforced NIST's EO 13636 role. Created through collaboration between industry and government, the voluntary Framework consists of standards, guidelines, and practices to promote the protection of critical infrastructure. The prioritized, flexible, repeatable, and cost-effective approach of the Framework helps owners and operators of critical infrastructure to manage cybersecurity-related risk."
National Institute of Standards and Technology (NIST): http://www.nist.gov/