ASIO will thankfully be keeping an eye out for potential troublemakers who are supporters of the Russian aggression. They tend to be right wing and even mix in with the mandate protests.
Of course there are some that could well be posting direct from Russian servers given they are well known for interfereing in other countries affairs. Look at what happened in the lead up to the past two USA elections. In fact on the world politics forum the threads were running hot with Pro Putin proTrump posters always quoting Russian govt controlled media "Russia Today(RT)". After the US elections and Trump got the boot some of those disappeared.