# Homeland Security Information Network **Domain:** Austin Research / Surveillance **Doc Type:** Research entity **Source basis:** Supplied essay and the specifically identified records; verification scope is recorded in [[wiki/Austin Surveillance Evidence Ledger|the evidence ledger]]. The **Homeland Security Information Network (HSIN)** is DHS’s portal for sharing sensitive but unclassified information among authorized governmental and other partners. GAO’s January 2026 watchlist report identifies it as an operational link between federal watchlist processing and local fusion centers. In the process described in Appendix II, a confirmed positive encounter reported to the FBI’s Threat Screening Center produces notification to the relevant fusion center through HSIN. The information can include identifiers, handling code, encounter location, and contextual details. Fusion-center personnel can then query additional databases and produce or share analytical products. HSIN therefore supplies a concrete **notification and dissemination layer** in the [[wiki/Watchlist Encounter Process|Watchlist Encounter Process]]. It is distinct from LEIS’s person-query access to DHS records through ICEPIC. Keeping the interfaces separate reveals the larger architecture more accurately: one channel exposes queryable records, another moves encounter information and intelligence products. The report establishes the national mechanism and summarizes interviewed centers. It does not identify every center or prove that a specific Austin individual followed this path. ## Connected entries [[wiki/Watchlist Encounter Process|Watchlist Encounter Process]] · [[wiki/Austin Regional Intelligence Center|Austin Regional Intelligence Center]] · [[wiki/ICEPIC|ICEPIC]] · [[wiki/DHS Law Enforcement Information Sharing Service|DHS Law Enforcement Information Sharing Service]] · [[wiki/Fusion Center Oversight|Fusion Center Oversight]] ## Sources and corpus context - [[research/The Austin Surveillance Field|The Austin Surveillance Field]] - [GAO-26-108650 — Terrorist Watchlist, January 12, 2026; Appendix II, pp. 37–38](https://www.gao.gov/assets/gao-26-108650.pdf) **Cluster:** [[wiki/Austin Surveillance Field|Austin Surveillance Field]] · [[wiki/Austin Executable Loop|Austin Executable Loop]] · [[wiki/Austin Surveillance Evidence Ledger|Austin Surveillance Evidence Ledger]]