The Homeland Security Information Network (HSIN) is the Department of Homeland Security’s official system for trusted sharing of Sensitive But Unclassified (SBU) information between federal, state, local, tribal, territorial, international, and private sector partners. HSIN users rely on the platform to access mission-critical data, send requests securely between agencies, manage operations, coordinate planned event safety and security, respond to incidents, and share the information they need
