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Counterterrorism

Last Updated: | Press Releases

DHS Strengthened and Innovated, Leveraged New Partnerships, and Invested in the Workforce to Tackle Today’s Threats

Under the leadership of Secretary Alejandro N. Mayorkas, the Department met the unprecedented range of threats and challenges by building new capabilities and expanding and strengthening existing ones; deepening and broadening partnerships with the private sector, state and local authorities across the country, civil society, and allies around the world; innovating and improving operations to better serve the American public and reach people where they are; and investing with historic focus in the well-being of the DHS workforce. Taken together, these changes have transformed the Department and its ability to protect the American people from the threats that lie ahead. 

Last Updated: | Press Releases

DHS’ 2025 Homeland Threat Assessment Indicates the Threat of Domestic and Foreign Terrorism in the Homeland Remains High

DHS' 2025 Homeland Threat Assessment (HTA), released on October 2nd, is designed to inform both the public and the Department’s partners of the threats to public safety and security, in order to assist federal, state, and local partners in preparing, preventing, and responding to an ever-evolving threat environment.

Last Updated: | Blog

DHS CWMD Assistant Secretary Speaks about CWMD’s Role in the National Biodefense Mission

On June 4, 2024, Mary Ellen Callahan, DHS Countering Weapons of Mass Destruction Office (CWMD) Assistant Secretary, delivered a speech on CWMD's role in the National Biodefense Mission at the Massachusetts Institute of Technology, Lincoln Laboratory's Biotechnology and Resilient Human Systems Workshop.

Last Updated: | Blog

DHS Announces Creation of the Homeland Intelligence Advisory Board

The Department of Homeland Security (DHS) announced the creation of the Homeland Intelligence Advisory Board (the Board), which will advise the Under Secretary for Intelligence and Analysis on national and homeland security intelligence matters.

Last Updated: | Press Releases

2023 Year in Review: Secretary Mayorkas Champions Department-Wide Efforts to Save Lives and Prepare for 21st Century Security Challenges

Secretary of Homeland Security Alejandro N. Mayorkas and the Department of Homeland Security (DHS) reflect on the progress made in 2023 to improve cohesion, transparency, and innovation in the work of preventing, preparing for, and responding to the many and varied threats facing the homeland in 2023.

Last Updated: | Publication

CVE Diversion Program – Assessment Tools to Support Secondary and Tertiary Intervention for Violent Extremism Report

Countering Violent Extremism: Diversion Program—Assessment Tools to Support Secondary and Tertiary Intervention for Violent Extremism Report

Last Updated: | Publication

Terrorism and Prevention and Radicalization: Campbell Systematic Reviews Activity Fact Sheet

This fact sheet outlines how the Department of Homeland Security (DHS) Science and Technology Directorate (S&T), in coordination with international partners, has set up a project with the Campbell Collaboration Crime and Justice Group that aims to produce high-quality evidence reviews that can help policymakers and practitioners consider least-biased and most scientifically rigorous evidence in their decision-making. 

Last Updated: | Press Releases

Secretary Mayorkas Announces Establishment of Homeland Intelligence Experts Group

U.S. Department of Homeland Security (DHS) Secretary Alejandro N. Mayorkas, Under Secretary for Intelligence and Analysis (I&A) Ken Wainstein, and Counterterrorism Coordinator Nicholas Rasmussen announced the establishment of the Homeland Intelligence Experts Group.

Last Updated: | Press Releases

DHS Awards $20 Million to 34 Organizations in Effort to Prevent Targeted Violence and Terrorism

The Department of Homeland Security (DHS) announced the award of 34 grants, totaling $20 million, through the Targeted Violence and Terrorism Prevention (TVTP) Grant Program for Fiscal Year 2023 (FY23).

Last Updated: | Press Releases

Five Country Ministerial 2023 Communique

We, the Home Affairs, Interior, Security and Immigration Ministers of Australia, Canada, New Zealand, the United Kingdom, and the United States convened in person, under Canada’s chairship, in Wellington, New Zealand on June 27-28, 2023 for the Five Country Ministerial.