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The Australian Security Intelligence Organisation is Australia's national security agency responsible for the protection of the country and its citizens from espionage, sabotage, acts of foreign interference, politically motivated violence, attacks on the Australian defence system, and terrorism.

You should ring the National Security Hotline on 1800 123 400 if you have concerns about, or information on, threats to Australia's critical infrastructure, or if you believe you have information of possible terrorist activity or have seen or heard something suspicious that may need investigation by security agencies.
 
ASIO Outreach is the principal interface between the Australian Security Intelligence Organisation (ASIO) and government and industry stakeholders. The secure website operates on a free subscription basis. The ASIO Outreach website contains intelligence-backed reporting on the domestic and international security environment.

This reporting is drawn from the full range of ASIO's information holdings and expertise (including the multi-agency National Threat Assessment Centre, ASIO's protective security area (T4) and the Counter-Espionage and Interference Division) and some foreign intelligence partner agency reports.