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.


  1. Science and Technology
  2. About S&T

About S&T

Since 2003, the Department of Homeland Security (DHS) Science and Technology Directorate (S&T) has provided sound, evidence-based scientific and technical perspectives to address a broad spectrum of current and emerging threats. We are the Department’s science advisor and research and development arm. 

S&T conducts basic and applied research, development, testing and evaluation activities to deliver effective solutions in homeland security in areas of high impact and value for the nation.

We do the science that strengthens the nation’s overall security and deliver the technologies that allow those on the front lines to effectively and safely complete their missions.


Securing Our Homeland with Science and Technology Infographic
Check out our Infographic to learn how S&T is securing the homeland! 

Watch the 2022 S&T Overview

Last Updated: 02/23/2024
Was this page helpful?
This page was not helpful because the content