Australian Secret Intelligence Organization

The Australian Secret Intelligence Organization, Australia's domestic counterintelligence service, is responsible (in coordination with the Federal Police[?]) for preventing espionage by foreign powers, and is attempting to monitor and prevent terrorist and other political violence[?]. It is approximately equivalent to Britain's counterintelligence service, MI5.

ASIO came to prominence in the 1950s with the Petrov affair[?]. Throughout the 1960s, like other Western intelligence agencies it monitored the activities of Vietnam War protestors and others on the political left (some of whom were involved in espionage for the Soviet Union but many more who were not and whose monitoring amounted to little more than harassment). The distrust engendered in the Australian Labor Party led to a raid on the ASIO offices by the new Attorney-General, Lionel Murphy in 1972 when Labor won office.

See also: Australian Secret Intelligence Service, Defence Signals Directorate.