Media, Defamation & Reputation Management

Media & Defamation Experts

Mark O’Brien Legal are Australia’s leading defamation law firm.

We act for both plaintiffs (claimants) and defendants (including mass media publishers), giving us a unique perspective that strengthens our strategy and advocacy.

For a claimant, false or damaging statements can have profound consequences, tarnishing reputations, harming careers, and eroding trust in both personal and professional spheres. In today’s digital age, where information spreads instantly, the stakes are even higher as defamatory content can remain accessible indefinitely, impacting future opportunities and relationships.

Protecting your reputation isn’t just about addressing the immediate harm – it’s about preserving your credibility, livelihood, and standing in the community.

That’s why swift, strategic action is essential to mitigate damage, restore your good name, and secure long-term peace of mind. In a 2025 analysis conducted by Australia’s leading media law publisher, Mark O’Brien Legal had achieved the highest average defamation awards for clients amongst defamation law firms in Australia for the period 2020 – 2024.

For a publisher, whether corporate or an individual, a defamation claim can have far-reaching reputational and financial impacts.

We have a proven track record in successfully defending the rights of publishers over published material, from mass media publishers to individuals posting on social media.

We provide round the clock pre-publication advice for publishers, including one of Australia’s leading online news websites.

No matter whether you are a plaintiff or a publisher, Mark O’Brien Legal have the unique skills to aggressively and strategically fight to protect your interests.

PROTECTING YOUR RIGHTS

Media, Defamation and Reputation Management

With unmatched expertise in defamation, other forms of media law, and reputation management, we act swiftly and decisively in high-stakes situations.

Clients rely on us to deliver strategic guidance in critical moments, whether it’s making or responding to defamation claims, providing reputation management advice and coordinating with internal teams and external media advisors.

Our services span the full spectrum of reputation management, from providing advice and assistance prior to publication to post-publication remedies and crisis management.

Our track record for aggressive representation has established us as a trusted partner for media companies, social media platforms, and individuals or corporations making or facing reputational threats.

Available around the clock, we work to resolve crises efficiently, negotiate settlements where possible or litigate assertively when necessary.

With a fearless, results-driven approach, we ensure that our clients’ interests are fully and aggressively protected.

Our Cases

As the leading Media and Defamation law firm we have successfully acted in many high-profile cases including acting for:

  • A senior NSW politician in defamation proceedings who was falsely accused on videos uploaded to YouTube (owned by Google) of having acted corruptly and committing perjury, with our client being awarded $715,000 in damages and costs.
  • A mass media publisher in defending defamation proceedings brought against it by an individual who was accused of being a sexual predator, with judgement ordered in our client’s favour, together with an order requiring payment of our client’s costs on an indemnity basis.
  • An individual in defamation proceedings brought against him by a local government mayor over a comment posted by our client on Facebook, with the claim struck out together with an order that our client’s costs be paid.
  • A billionaire who was falsely accused by The Sydney Morning Herald, and by the ABC of allegations including that he had bribed the President of the General Assembly of the United Nations, with our client being awarded damages in two defamation proceedings of $280,000 and $590,000 respectively together with costs.
  • A mass media publisher in defending defamation proceedings brought against it by an individual who was accused of having posted job listings with the intent of obtaining women for sexual relationships, with judgement in our client’s favour together with costs.
  • A PNG politician in defamation proceedings who was falsely accused by The Australian Financial Review of having acted corruptly, with our client being awarded $465,000 damages and costs.
  • A PNG politician in defamation proceedings after having been again falsely accused by The Australian Financial Review of having acted corruptly, with our client being paid compensation in a confidential amount and being paid his costs in the sum of $265,000.
  • A mass media publisher in defending defamation proceedings brought against it by a radio broadcaster over criticisms of material broadcast on the broadcaster’s radio program, with the proceedings being subsequently settled, with each party paying their own costs, and not involving the payment of any damages.
  • A prominent solicitor in defamation proceedings who was falsely accused by The Daily Telegraph of being incapable of representing his client’s interests in court by reason of the ravages of age, with our client being awarded $111,000 damages together with costs.
  • A local government councillor in obtaining a declaration that the funding by his Council of defamation proceedings brought against him by the mayor and the Council’s general manager was invalid, together with a costs order in our client’s favour.
  • An international cricketer in defamation proceedings who was falsely accused by The Sydney Morning Herald, The Age, and The Canberra Times of having indecently exposed himself to a woman in the team dressing room during an international cricket competition, with our client being found by a jury to having been defamed, resulting in an award of $300,000 in damages and payment of his costs.
Level 10, 16 - 18 O’Connell Street Sydney NSW 2000 Australia
Overseas +61 2 9216 9827
info@markobrienlegal.com.au

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