Medibank, Australia's largest private health insurer, confirmed this week that hackers had accessed the information of 9.7 million current and former clients, including Prime Minister Anthony Albanese.
The hackers Thursday uploaded a second batch of files to a dark web forum, with more sensitive details about hundreds of Medibank customers.
The first leaks appear to have been selected to cause maximum harm: targeting those who received treatment related to drug abuse, sexually transmitted infections, or pregnancy terminations.
"Added one more file abortions.csv," the anonymous hackers wrote on the forum, before detailing their ransom threat.
"Society ask us about ransom, it's 10 million USD. We can make discount... $1 = 1 customer."
Medibank has repeatedly refused to pay the ransom.
More about: