The acting prime minister says he has "enormous confidence" in security agencies and the visa screening process, as Australians in Lebanon are urged to return home amid concerns of an escalating conflict.
Documents tabled in parliament on Friday revealed five visas for people fleeing conflict in the Mideast had been cancelled as of April.
That was due to the Australian Security Intelligence Organisation determining visa holders were a "direct or indirect risk to Australia's security" before they entered the nation.