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-060 Application Authentication System (AppAuth)

DHS/ALL/PIA-060 Application Authentication System (AppAuth)


The Application Authentication System (AppAuth) is a Department of Homeland Security (DHS) enterprise system developed and operated by the DHS Headquarters Information Sharing and Services Office (IS2O). AppAuth is a DHS single sign-on enterprise authentication service, which provides a uniform authentication service based on Microsoft’s Active Directory services. DHS is updating this Privacy Impact Assessment (PIA) because AppAuth will now share personally identifiable information (PII) outside of the Department and within a Government specific public-cloud instance (Azure). January 2019

Associated SORN(s)

  • DHS/ALL-037 E-Authentication Records
Attachment Ext. Size Date
DHS/ALL/PIA-060(a) Application Authentication System (AppAuth) - January 2019 PDF 261.92 KB
DHS/ALL/PIA-060 Application Authentication System PDF 328.98 KB
Last Updated: 03/31/2023
Was this page helpful?
This page was not helpful because the content