1. The United States Computer Emergency Readiness Team: Enhancing cybersecurity awareness and resiliency through collaborative partnerships, 23 Aug 2012
2. The White House: International strategy of cyberspace-prosperity, security and openness in a networked world, vol. 5, pp. 176–177, May 2011
3. The White House: National strategy for trusted identities in cyberspace—enhancing online choice, efficiency, security, and privacy, vol. 23,pp. 78–79, April 2011
4. U.S. Department of Defense: Department of Defense Strategy for Operating in Cyberspace, vol. 67, pp. 23–24, 12 July 2011
5. Kumar, A.: New security concept of China, vol. 56, pp. 32–33 (2012). https://www.Ipcs.org/special-report/china/new-security-concept-of-china-125.html