In a series of dark web blog posts, the REvil cybercrime gang last year began leaking thousands of private records stolen from Australia's largest private health insurer Medibank.
The data dump was the result of Medibank's refusal to pay a ransom demanded by the gang when 9.7 million of its current and former customers were exposed to a cyberattack that nabbed personal data such as name, address, date of birth and gender, along with significant amounts of sensitive health claims data.
Medibank said the hack might cost the company between $25 million and $35
