Latest Data Breach 2025 In Australia. Protections introduced in the wake of the 2022 optus data breach have blocked more than 300,000 fraudulent attempts to use australians' stolen data. The compromised data includes names, addresses,.
The hacker group ‘nullbulge’ claims to be responsible for the discovered 1.2 tb of data. Below, we’ve listed the major cyber breaches in australia that have had the biggest impact on the largest number of people.