Cybersecurity & Infrastructure Security Agency (CISA)

CISA leads the national effort to defend critical infrastructure against the threats of today, while working with partners across all levels of government and in the private sector to secure against the evolving risks of tomorrow.

CISA is responsible for protecting the Nation’s critical infrastructure from physical and cyber threats. This mission requires effective coordination and collaboration among a broad spectrum of government and private sector organizations.

CISA is organised into three divisions:

- Comprehensive Cyber Protection
- Infrastructure Resilience
- Emergency Communications

CISA operates within the Departmnent of Homeland Security (DHS).