Australian Security Intelligence Organisation chief Mike Burgess is due to deliver his annual threat assessment later this month.
But before the speech, Mr Burgess will brief the national cabinet on Friday.
Last year the ASIO boss warned his agency had detected and disrupted a foreign interference plot in the lead-up to an election.
While he did not identify whether it was a state, territory or federal election, he said ASIO was seeing "attempts at foreign interference at all levels of government".
He has been calling for a "whole-of-nation" approach to tackling radicalisation, online propaganda and misinformation, single-issue extremism and minors embracing violent extremism.
Late last year, Australia's terror threat was lowered from probable to possible, but Mr Burgess warned it "remains plausible that someone will die at the hands of a terrorist in Australia within the next 12 months".
There have been 11 terrorist attacks and a further 21 plots have been disrupted since 2014.
Half of the foiled plots were in the first two years when Islamic State was more prominent.
There have also been 153 terrorism-related charges stemming from 79 counter-terrorism operations since 2014.
More than 50 people convicted of terrorist offences are due for release over coming years, with a small number to be freed by 2025.
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