The Australian Security Intelligence Organisation (ASIO; /ˈeɪzɪoʊ/) is Australia’s national security service which is 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.ASIO is comparable with the United Kingdom Security Service (MI5). As with MI5 officers ASIO officers have no police powers of arrest and are not armed.