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The hackers behind the Medibank data breach claim they have dumped the remaining customer information they stole from the health insurer on the dark web.
Medibank reported the breach on October 13 and the Russian ransomware group has been releasing customer information in a staged manner on the dark web since early November.
"Happy Cyber Security Day!!! Added folder full. Case closed," the hackers posted overnight.
But unlike previous data dumps they did not provide active file names or links. Earlier links are also inactive. As well, the hackers' blog had been inactive since November 20.
Some 9.7 million current and former customers were affected by the Medibank hack.
In October, the hackers demanded a $US1 per customer ransom, which Medibank declined to pay.
Government Services Minister Bill Shorten said it was shocking.
"The people who've hacked Medibank are absolute criminal lowlife," he told ABC Radio on Thursday.
"If people think that any government ID has been in any way breached or they're aware of it, contact us.
"There's no particular comfort that you can give people, but when it's to do with a government services area, we will red flag anyone we see whose information has been hacked ... if anyone tries to use that ID."
Mr Shorten said Medibank customers would be feeling violated.
"We're just going to have to muscle up and put whatever resources we need to protect people's information from the government side," he said.
Federal government agencies as well as Australian Federal Police have been investigating the hack.
Medibank has been contacted for comment.
