sydney australia domestic spy chief warn universities need conscious foreign interference apparent reference china perceive undercover influence campuses australian security intelligence organisation director-general duncan lewis tell politicians canberra late tuesday espionage foreign interference insidious threat lewis say foreign power clandestinely seek shape opinion australian public media organizations government officials order advance countries political objectives lewis specifically name china late night testimony parliamentary inquiry question china involvement say strongly identify comment make senior government official month universities protect chinese influence ask last week communist party overseas activities place like australia senior official say chinese people live overseas respect laws countries live china australia large trade partner business spur wide-ranging china-australia free trade agreement sign 2015. relations australia china test recent months unite state japan australia voice concern beijing unilateral action dispute south china sea include continue artificial land build australia campuses warn 'clandestine influence apparent poke china