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Recent Cyber Attacks and Data Breaches in Australia

Optus Data Breach

Sep 2022 - Up to 10 million people affected. Optus says the stolen data includes names, email addresses, postal addresses, phone numbers, dates of birth, and for a portion of the affected customers, identification numbers including passport numbers, driver’s licence numbers and Medicare numbers.

How the Data Breach Happened:

Reports suggest Optus had an application programming interface (API) available online that did not require authorisation or authentication to access customer data.

Medibank Cyber Attack

Oct 2022 - 9.7 million people affected. Medibank admitted that the personal data of some of its customers — including names, addresses, Medicare numbers and phone numbers — was stolen in a cyber attack.

How the Cyber Attack Happened:

An individual with privileged access to Medibank's internal systems, had their credentials stolen. These credentials were sold and purchased on the dark web by an unconfirmed buyer who used them to gain access to Medibank's internal system.

Latitude Cyber Attack

Mar 2023 - 330,000 customers affected. Latitude confirmed about 330,000 customers and applicants have had their personal information stolen. 

How the Cyber Attack Happened:

Latitude said the attacker stole Latitude employee log-in credentials from one technology vendor and used them to log into two other service providers to steal customer files and ID documents.