U.S. flag

An official website of the United States government

Government Website

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Safely connect using HTTPS

Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Preventing Terrorism

Protecting the American people from terrorist threats is the reason DHS was created, and remains our highest priority.

  • Building Local Prevention Frameworks

    The Department of Homeland Security’s (DHS) Center for Prevention Programs and Partnerships (CP3) seeks to prevent acts of targeted violence and terrorism by working with the whole of society to establish and expand local prevention frameworks. Through technical, financial, and educational assistance, CP3 supports local efforts that prevent individuals from radicalizing to violence and intervene with individuals who may be radicalizing, or have radicalized, to violence.

  • CP3 IMP

    This Implementation and Measurement Plan Template guides applicants of the TVTP Grant Program in completing a major component of the application.

  • FY23 CP3 IMP Guidance

    This guidance should be used to develop an Implementation & Measurement Plan (IMP) for the FY23 Targeted Violence and Terrorism Prevention Grant Program.

  • DHS Actions: Cybersecurity

    President Biden has made cybersecurity a top priority for the Biden-Harris Administration at all levels of government. The Department of Homeland Security and its components, namely its Cybersecurity and Infrastructure Security Agency, play a lead role in strengthening resilience across the nation and sectors, investigating malicious cyber activity, and advancing cybersecurity alongside our democratic values and principles.

  • DHS/CBP/PIA–013 Customs-Trade Partnership Against Terrorism (C-TPAT)

    Customs-Trade Partnership Against Terrorism (C-TPAT) is a U.S. Customs and Border Protection (CBP) voluntary trade partnership program in which CBP and members of the trade community work together to secure and facilitate the movement of legitimate international trade.

  • Threat Assessment and Management Teams

    The Center for Prevention Programs and Partnerships (CP3) provides a resource that gives an overview of threat assessment and management teams. Through identifying and managing potential threats, these teams provide alternatives to investigation and/or prosecution for bystanders who are actively seeking intervention assistance with a known individual at risk of mobilizing to violence.

  • National Terrorism Advisory System Sample Advisories

    The National Terrorism Advisory System, or NTAS, replaced the color-coded Homeland Security Advisory System (HSAS) in 2011. Provided is a sample NTAS alert and a sample bulletin.

  • Common Pre-Travel Activities of Aspiring US Foreign Fighters

    Common Pre-Travel Activities of Aspiring US Foreign Fighters

  • DHS TRIP

    The Department of Homeland Security Traveler Redress Inquiry Program (DHS TRIP) is a single point of contact for individuals who have inquiries or seek resolution regarding difficulties they experienced during their travel screening at transportation hubs—like airports—or crossing U.S. borders. DHS TRIP uses an online form that you complete using your computer and an Internet connection.

  • DHS/ALL/PIA-057 Countering Violent Extremism Grant Program

    DHS/ALL/PIA-057 Countering Violent Extremism Grant Program