Medibank

In October 2022, client data from Medibank, Australia’s largest health insurer, was released by an extortionist, including details of HIV diagnoses and drug abuse treatments, after the company refused to pay a ransom for the personal records of current and former customers.

Australians was stolen from the country's largest health insurer, Medibank, in late 2022.

Announcing the measures on Tuesday, Home Affairs Minister Clare O'Neil described the Medibank hack as "the single most devastating cyber-attack we have experienced as a nation".

Australia has faced a string of large data breaches in recent years, but few - if any - have rocked the country like the Medibank hack.

The cyber criminals had stolen login details which granted them access to all of Medibank's customer data - including the medical records of everyone from athletes and media figures to the Prime Minister Anthony Albanese.