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The Homeland Security Information Network (HSIN) is a national, secure, and trusted web-based portal for information sharing and collaboration between Federal, state, local, tribal, territorial, private sector, and international partners engaged in the homeland security mission.

HSIN is made up of a growing network of communities called Communities of Interest. Communities of Interest are organized by state organizations; Federal organizations; or mission areas such as emergency management, law enforcement, critical sectors, and intelligence. Users can securely share within their communities or reach out to other communities as needed. HSIN provides secure, real-time collaboration tools, including a virtual meeting space, instant messaging, and document sharing. HSIN also allows partners to work together instantly, regardless of their location, to communicate, collaborate, and coordinate.

Joining HSIN

Membership in HSIN is Community of Interest-based. First you need to decide which Community of Interest meets your needs. If you work in the field of critical infrastructure security, visit the Critical Infrastructure Sectors page, to determine the most appropriate HSIN-Critical Sectors site for you. If you need additional information, please contact the Mission Advocate listed as the point of contact for the Community of Interest, or e-mail the HSIN program at

To request access to HSIN-CS, please submit the following to

  • Name
  • Employer
  • Title
  • Business email
  • Brief written justification

Once nominated, the Community of Interest Validating Authority will review your membership application and approve or deny your admission to the Community of Interest. If the application is approved, an email will be sent to you with instructions on how to log onto HSIN for the first time.


Last Published Date: June 2, 2014
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