The Times Australia
The Times World News

.

A class action against Optus could easily be Australia's biggest: here's what is involved

  • Written by Mirella Atherton, Lecturer in Law, University of Newcastle
A class action against Optus could easily be Australia's biggest: here's what is involved

With the Optus data breach exposing almost 10 million current and former customers to identity theft, law firms are circling for what could end up being the biggest – and most valuable – class action case in Australian legal history.

A settlement could well be worth billions, eclipsing the current record of $494 million[1] paid to 10,000 victims of Victoria’s 2009 Black Saturday bushfires.

Two class-action specialists, Maurice Blackburn[2] and Slater & Gordon[3], are considering suing, and it’s possible others will follow. (Maurice Blackburn also has another case against Optus on its books over a 2019 data breach involving 50,000 customers.)

To proceed they’ll need to sign up at least seven people – one of whom acts as the “representative” or lead plaintiff. This shouldn’t be hard. They’ll then need to file a statement of claim for financial, economic or other loss.

Multiple class actions are possible if those claims pursue different issues. Or the firms could work together, as they have in the past.

Things to know about class actions

There have been about 700 class actions in Australia in the past 30 years. Class actions can be pursued through state or federal courts. Most go to the Federal Court, which has been empowered to hear class actions since 1992.

Less than 5%[4] of Federal Court actions have progressed to a judgement. About 60% have ended in a court-approved settlement, with the balance dismissed or discontinued.

The most common type of class action is by shareholders for loss of earnings. These account for about a third of Federal Court class actions.

The biggest shareholder settlement so far is $200 million, paid by Centro Property Group to almost 6,000 shareholders in 2012 over misleading and deceptive conduct by Centro’s board. This followed the Australian Securities and Investments Commission successfully prosecuting[5] Centro (also in the Federal Court).

Class actions account for less than 1% of claims lodged with the Federal Court, but their scale and complexity means they take a disproportionate amount of court time, as well as media attention.

Because of their cost, many class actions are funded by third parties as a type of business venture. This enables the law firms running the action to sign up plaintiffs on a “no win, no fee”. The litigation funder then takes a share of the settlement (as does the law firm for its legal fees).

Read more: Regulations needed for litigation funders who can't pay out when cases fail[6]

According to Australian Law Reform Commission[7] data for settled cases, the median percentage of any settlement going to plaintiffs is 57%, with law firms taking 17% and funders taking 22%.

What would a class action against Optus involve?

Based on what is currently known, there are two main ways a class action (or class actions) could proceed against Optus.

First, it could argue negligence, with the scope of liability outlined in state or territory legislation. Second, it could argue breach of privacy, in contravention of the federal Privacy Act[8], in the Federal Court.

To succeed in negligence, a court would have to find Optus had a duty of care to its customers to protect their personal information, that it breached its duty, and that customers suffered damage or loss.

Read more: How not to tell customers their data is at risk: the perils of the Optus approach[9]

To succeed on a breach of privacy, the Federal Court would have to find that personal information held by Optus was subject to unauthorised access or disclosure, or lost, and that the company failed to comply with the “privacy principles” enshrined in the Privacy Act.

Read more: Optus says it needed to keep identity data for six years. But did it really?[10]

A second basis for a class action in the Federal Court could be to argue a breach of the Telecommunications Act[11]. This legislation says carriers and carriage service providers “must to do their best” to protect telecommunications networks and facilities from unauthorised interference or unauthorised access.

What are the precedents?

The closest precedent in Australia to a successful class action for a mass breach of privacy is a 2019 case in the NSW Supreme court. This involved a claim by 108 NSW ambulance service employees against the NSW Health Department.

The employees, represented by the firm Centennial Lawyers[12], had their personnel files sold to a personal injury law firm by a contractor (who was convicted of unlawfully disclosing information and carried out community service for the crime).

The court ordered NSW Health to pay the sum of $275,000 in compensation[13]) – $10,000 for the lead plaintiff and about $2,400 for the others.

How much could the Optus case be worth?

Given the Optus data leak is established, there’s a strong basis to believe a class action would be successful.

If so, a court could award compensatory damages for the time and cost of replacing identification documents, as well as exemplary (or punitive) damages, to send a message to corporations handling citizens’ private information.

In determining damages, a court will take into account what efforts Optus has made to remedy the leak, mitigate the potential impact on those affected and pay for the costs of replacing drivers’ licences, Medicare cards or passports.

Though the economic loss per customer may be relatively small, multiplied by the potential class-action pool size – up to 10 million plaintiffs – compensatory damages could easily be billions of dollars, even without exemplary damages.

That makes this a hugely attractive prospect for a law firm or class-action funder.

References

  1. ^ $494 million (www.abc.net.au)
  2. ^ Maurice Blackburn (www.lawyersweekly.com.au)
  3. ^ Slater & Gordon (www.slatergordon.com.au)
  4. ^ than 5% (www.alrc.gov.au)
  5. ^ successfully prosecuting (www.smh.com.au)
  6. ^ Regulations needed for litigation funders who can't pay out when cases fail (theconversation.com)
  7. ^ Australian Law Reform Commission (www.alrc.gov.au)
  8. ^ Privacy Act (www.legislation.gov.au)
  9. ^ How not to tell customers their data is at risk: the perils of the Optus approach (theconversation.com)
  10. ^ Optus says it needed to keep identity data for six years. But did it really? (theconversation.com)
  11. ^ Telecommunications Act (www.legislation.gov.au)
  12. ^ Centennial Lawyers (www.centenniallawyers.com.au)
  13. ^ $275,000 in compensation (www8.austlii.edu.au.ezproxy.newcastle.edu.au)

Read more https://theconversation.com/a-class-action-against-optus-could-easily-be-australias-biggest-heres-what-is-involved-191515

Times Magazine

Building an AI-First Culture in Your Company

AI isn't just something to think about anymore - it's becoming part of how we live and work, whether we like it or not. At the office, it definitely helps us move faster. But here's the thing: just using tools like ChatGPT or plugging AI into your wo...

Data Management Isn't Just About Tech—Here’s Why It’s a Human Problem Too

Photo by Kevin Kuby Manuel O. Diaz Jr.We live in a world drowning in data. Every click, swipe, medical scan, and financial transaction generates information, so much that managing it all has become one of the biggest challenges of our digital age. Bu...

Headless CMS in Digital Twins and 3D Product Experiences

Image by freepik As the metaverse becomes more advanced and accessible, it's clear that multiple sectors will use digital twins and 3D product experiences to visualize, connect, and streamline efforts better. A digital twin is a virtual replica of ...

The Decline of Hyper-Casual: How Mid-Core Mobile Games Took Over in 2025

In recent years, the mobile gaming landscape has undergone a significant transformation, with mid-core mobile games emerging as the dominant force in app stores by 2025. This shift is underpinned by changing user habits and evolving monetization tr...

Understanding ITIL 4 and PRINCE2 Project Management Synergy

Key Highlights ITIL 4 focuses on IT service management, emphasising continual improvement and value creation through modern digital transformation approaches. PRINCE2 project management supports systematic planning and execution of projects wit...

What AI Adoption Means for the Future of Workplace Risk Management

Image by freepik As industrial operations become more complex and fast-paced, the risks faced by workers and employers alike continue to grow. Traditional safety models—reliant on manual oversight, reactive investigations, and standardised checklist...

The Times Features

What Is the Dreamtime? Understanding Aboriginal Creation Stories Through Art

Aboriginal culture is built on the deep and important meaning of Dreamtime, which links beliefs and history with the elements that make life. It’s not just myths; the Dreamtime i...

How Short-Term Lenders Offer Long-Lasting Benefits in Australia

In the world of personal and business finance, short-term lenders are often viewed as temporary fixes—quick solutions for urgent cash needs. However, in Australia, short-term len...

Why School Breaks Are the Perfect Time to Build Real Game Skills

School holidays provide uninterrupted time to focus on individual skill development Players often return sharper and more confident after structured break-time training Holid...

Why This Elegant Diamond Cut Is Becoming the First Choice for Modern Proposals

Personalised engagement styles are replacing one-size-fits-all traditions A rising diamond cut offers timeless elegance with a softer aesthetic Its flexible design wo...

Is sleeping a lot actually bad for your health? A sleep scientist explains

We’re constantly being reminded by news articles and social media posts that we should be getting more sleep. You probably don’t need to hear it again – not sleeping enough i...

Ricoh Launches IM C401F A4 Colour MFP to Boost Speed and Security in Hybrid Workplaces

Ricoh, a leading provider of smart workplace technology, today launched the RICOH IM C401F, an enterprise-grade A4 colour desktop multifunction printer (MFP) designed for Austral...