The Department of Homeland Security (DHS) is a United States federal agency created in 2002 to coordinate national efforts in safeguarding the country from threats, including cyber threats, terrorism, and natural disasters. In cybersecurity, DHS plays a crucial role by developing policies, sharing threat intelligence, and supporting both public and private sectors in protecting critical infrastructure. Through agencies like the Cybersecurity and Infrastructure Security Agency (CISA), DHS leads initiatives to enhance the nation's cyber resilience, respond to incidents, and provide guidance on best practices. Their work includes issuing alerts, conducting risk assessments, and fostering collaboration between government and industry partners.