Prime Minister Scott Morrison is calling for action against online trolls in an effort to toughen regulation on social media.
Mr Morrison is urging countries including the United States and the UK to call on Facebook and other social media platforms to reveal the anonymous trolls who harass people online.
Mr Morrison made a statement on Saturday to the G20 summit in Rome which proposes a new round of coordinated action to protect people online, with one option being to use expanded powers to identify people who hide behind anonymous accounts.