A Cranbourne woman won $1.2 million after switching her TattsLotto ticket just minutes shortly before the drawing.
A Geelong man also secured $1.2 million with a final ticket exchange.
According to reports, recent Saturday Lotto winners in Hornsby did not quit their jobs immediately.
General guidance for lottery winners suggests taking a pause before coming forward and seeking professional advice.
The Lott released tips on Monday from a genuine division one winner on how to handle a major prize.