The Cybersecurity and Infrastructure Security Agency (CISA) is the United States' national risk advisor, working with partners to defend against today's threats and collaborating to build a more secure and resilient infrastructure for the future. CISA leads the national effort to understand, manage, and reduce risk to U.S. cyber and physical infrastructure. It connects public and private sector partners with resources, analysis, and tools to help them build their own cyber, communications, and physical security and resilience.
Serves as the central hub for CISA's national cybersecurity and infrastructure protection operations, policy development, and interagency coordination. It houses key leadership and operational centers like the National Cybersecurity and Communications Integration Center (NCCIC).
State-of-the-art secure facilities, advanced cyber operations centers, and communication hubs designed for 24/7 threat monitoring and response coordination.
A mission-driven, collaborative, and fast-paced environment focused on public service, innovation, and partnership to address evolving cyber and physical threats. Emphasis on expertise, agility, and national security.
The headquarters is critical for national security, acting as the nerve center for protecting America's critical infrastructure from cyberattacks and physical hazards. Its location facilitates close collaboration with DHS, the intelligence community, and other government partners.
While CISA's primary mandate is the protection of U.S. critical infrastructure, it actively engages with international partners, including foreign governments, international organizations, and multinational corporations. This collaboration involves sharing threat information, coordinating on incident response, promoting cybersecurity best practices, and developing international norms for responsible state behavior in cyberspace. CISA often has attachés or liaisons in key international locations to facilitate these efforts.
1110 North Glebe Road
Arlington
Virginia
USA
Address: CISA Region 1 (New England), Thomas P. O'Neill, Jr. Federal Building, 10 Causeway Street, Boston, MA 02222 (General Federal Building Location)
To enhance the security and resilience of critical infrastructure within the New England region through direct engagement, resource provision, incident response support, and capacity building tailored to regional needs and threat landscapes.
Address: CISA Region 7 (Heartland), 2345 Grand Blvd, Kansas City, MO 64108 (General Federal Building Location)
To strengthen the security posture of critical infrastructure within the Heartland region, addressing specific risks relevant to its agricultural, manufacturing, and energy sectors, among others.
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As of April 2025, Cybersecurity and Infrastructure Security Agency' leadership includes:
Cybersecurity and Infrastructure Security Agency has been backed by several prominent investors over the years, including:
CISA's senior leadership team has maintained relative stability over the past 12 months, with key positions filled by experienced professionals. Any significant transitions are typically announced via official DHS or CISA press releases. Minor staffing changes occur as part of normal government personnel rotations but are not always publicly detailed.
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CISA, as part of the Department of Homeland Security (DHS), typically follows a common U.S. federal government email format. The most prevalent format is firstname.lastname@cisa.dhs.gov.
firstname.lastname@cisa.dhs.gov
Format
jane.doe@cisa.dhs.gov
Example
95%
Success rate
CISA.gov • May 22, 2024
CISA announced a new initiative aimed at bolstering the cybersecurity posture of K-12 schools across the nation. This includes providing tailored resources, training, and assessments to help educational institutions protect against ransomware and other cyber threats....more
CISA.gov • June 5, 2024
CISA, in collaboration with the FBI and the Multi-State Information Sharing and Analysis Center (MS-ISAC), released comprehensive guidance to help water and wastewater systems (WWS) sector facilities reduce their risk to cyber threats. The guidance focuses on practical steps to improve operational resilience and cybersecurity....more
CISA.gov • April 30, 2024
CISA issued an Emergency Directive (ED 24-02) requiring Federal Civilian Executive Branch (FCEB) agencies to take immediate action to secure Microsoft Entra ID environments following observed malicious activity and identified vulnerabilities....more
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