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. Home
  2. News
  3. Publication Library
  4. DHS/ALL/PIA-027 Watchlist Service

DHS/ALL/PIA-027 Watchlist Service


DHS receives a copy of the Terrorist Screening Database (TSDB), the U.S. Government’s consolidated database maintained by the Department of Justice (DOJ) Federal Bureau of Investigation (FBI) Terrorist Screening Center (TSC), to facilitate DHS mission-related functions, such as counterterrorism, law enforcement, border security, and inspection activities. In July 2010, DHS launched an improved method of transmitting TSDB data from TSC to DHS through a service called the DHS Watchlist Service (WLS). WLS maintains a synchronized copy of the TSDB, which contains personally identifiable information (PII) and disseminates TSDB records it receives to authorized DHS Components. DHS is updating this Privacy Impact Assessment (PIA) to add the United States Citizenship and Immigration Services (USCIS) Fraud Detection and National Security-Data System (FDNS-DS) as an authorized recipient of TSDB data via the WLS.

Associated SORN(s):

  • DHS/ALL-030 Use of the Terrorist Screening Database System of Records
  • DHS/USCIS-006 Fraud Detection and National Security Records (FDNS)
Attachment Ext. Size Date
DHS/ALL/PIA-027(e) Watchlist Service - May 2016 PDF 147.71 KB 05/19/2016
DHS/ALL/PIA-027(d) Watchlist Service - July 2020 PDF 508.23 KB 07/13/2020
DHS/ALL/PIA-027(c) Watchlist Service - December 2014 PDF 165.58 KB 12/03/2014
DHS/ALL/PIA-027(b) - Watchlist Service - July 2011 PDF 170.26 KB 03/22/2016
DHS/ALL/PIA-027 Watchlist Service - July 2010 PDF 399.95 KB 03/22/2016
Last Updated: 02/28/2024
Was this page helpful?
This page was not helpful because the content