Australia Just Recorded Its Worst Year for Data Breaches: Here’s What You Need to Know

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Australia's Record-Breaking Year for Data Breaches

In 2024, Australia saw its highest number of reported data breaches since mandatory notification laws were introduced in 2018.

Cybersecurity alert graphic with warning symbol

The Office of the Australian Information Commissioner (OAIC) received a total of 1,113 breach notifications, a staggering 25% increase from the previous year. From July to December alone, 595 new breaches were reported.

So what’s driving this surge, and more importantly, what should Australian businesses and agencies be doing in response?

The Threat Landscape Isn’t Slowing Down

Visual of cyber hacker representing threat landscape

According to Australian Privacy Commissioner Carly Kind:

“The trends we are observing suggest the threat of data breaches, especially through the efforts of malicious actors, is unlikely to diminish.”

Attackers are getting smarter, more organised, and more persistent. The risks to Australians' privacy are only increasing.

Where Are These Breaches Coming From?

Malicious and criminal attacks were the leading cause, accounting for 69% of all reported breaches in the second half of the year. Most were cybersecurity-related.

Common tactics included:

  • Phishing attacks
  • Social engineering and impersonation
  • Direct system hacks

Phishing remains a serious concern, and the OAIC urges organisations to invest in staff awareness and training.

The Sectors Hit Hardest

Icons representing healthcare and government breach data

Top two sectors impacted:

  • Health service providers (20%)
  • Australian Government agencies (17%)

Public agencies often hold highly sensitive information. Yet, many lag behind private organisations in breach detection and reporting. That’s a serious concern.

“Individuals often don’t have a choice but to provide their personal information to access government services. This makes it even more important that agencies keep personal information secure and act quickly if there’s a breach.”

Time Matters – And the Clock Starts Ticking Early

Clock symbolizing urgency for data breach notification

Under the Privacy Act, organisations have up to 30 days to assess a suspected breach. If it poses serious harm, they must notify the OAIC and affected individuals as soon as practicable.

Delays increase risks such as identity theft, reputational harm, and emotional distress.

Not Just Compliance – It’s About Trust

The OAIC's powers include enforcement. For example, Oxfam Australia accepted an enforceable undertaking following its 2021 breach.

This highlights the need to be proactive—not reactive—about privacy and cyber readiness.

Key Takeaways for Aussie Businesses

  • Breaches are rising and will likely continue.
  • Phishing and social engineering are still top threats.
  • Government sectors are under scrutiny for slow responses.
  • Timely breach notification is not optional—it’s required.
  • Privacy Principle 11 mandates secure handling of personal data.

Don’t Wait for a Breach to Get Serious About Security

Now’s the time to audit your security practices. Build a response plan. Refresh staff training. Consider a penetration test to find vulnerabilities before attackers do.

Cyber threats won’t slow down—but with preparation and good governance, your business can stay ahead.

Cybersecurity checklists and online resources

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