There is no formal evidence of the aforementioned legal action...

There is no formal evidence of the aforementioned legal action and companies in Australia cannot sue for defamation, excepting those with less than 10 employees, and not for profits.

Strategic Litigation Against Public Participation refers to lawsuits filed to intimidate and silence individuals or groups who are speaking out on issues of public interest and the Australian government is under pressure to enact anti SLAPP legislation which exists in the US, Canada, the EU, UK, among many others. Consequences are early dismissal, stays of proceedings, recovery of costs and immediate appeal. Losing plaintiffs may be ordered to pay the defendant's costs and face additional sanctions.