The recently released statistics from the Office of the Australian Information Commissioner (OAIC) have highlighted a concerning trend in data breaches during the first half of 2024. The report revealed that there were 527 data breach notifications received by the OAIC from January to June 2024, marking a significant increase of 9% compared to the previous six months. This surge in data breaches is the highest recorded since the second half of 2020 in Australia, raising alarm bells about the state of data security in the country.
The primary cause of these data breaches continues to be cybersecurity incidents, accounting for 38% of all reported cases. Cyber threats such as compromised credentials, ransomware, and phishing attacks remain rampant, underscoring the critical importance of implementing robust cybersecurity measures. Organizations are urged to remain vigilant and adapt their defenses to keep up with the evolving threat landscape.
The impact of these data breaches on Australians has been substantial, with one incident alone affecting a staggering 12.9 million individuals. This breach, linked to MediSecure, represents the largest number of Australians affected by a single breach since the introduction of the Notifiable Data Breaches (NDB) scheme. Australian Privacy Commissioner Carly Kind expressed grave concerns about the frequency and severity of data breaches, with Australians facing risks ranging from scams and identity theft to emotional and physical harm.
Malicious and criminal attacks accounted for 67% of data breaches, with cybersecurity incidents making up 57% of these attacks. The health sector and the Australian Government were among the most heavily impacted sectors, highlighting vulnerabilities across both private and public entities. Commissioner Kind emphasized the need for comprehensive security strategies across all sectors to combat these evolving threats effectively.
To address the growing number of data breaches, the Australian Government has introduced the Privacy and Other Legislation Amendment Bill 2024. This proposed legislation aims to bolster the OAIC’s enforcement capabilities by introducing a more robust civil penalty regime and infringement notice powers. It also seeks to clarify existing security obligations by explicitly requiring organizations to implement technical and organizational measures to mitigate information security risks.
While the OAIC has welcomed these measures as a critical step towards enhancing Australia’s privacy framework, further reforms aligned with the Government’s response to the Privacy Act Review are deemed necessary. Commissioner Kind stressed the importance of all Australian organizations prioritizing personal information security and complying with breach notification requirements to safeguard individuals’ data to the fullest extent possible.
As data breaches continue to pose significant risks to Australians, the OAIC remains committed to enforcing compliance and providing guidance to organizations to navigate these evolving challenges effectively. The importance of strengthening privacy frameworks and enhancing information security measures cannot be overstated in the face of increasing cyber threats and breaches.

