Client data from Medibank, Australia's largest health insurance provider, has been published after the company refused to pay a ransom for the personal records of almost 10 million customers.
The information — including details of people's medical procedures — was released on the dark web on Wednesday.
It appeared to be a sample of data from current and former customers that Medibank said had been stolen last month.
Medibank said it expected the thief to continue releasing data.
“This is a criminal act designed to harm our customers and cause distress,” said Medibank chief executive, David Koczkar.
“We take seriously our responsibility to safeguard our customers and we stand ready to support them.”
Prime Minister Anthony Albanese, a Medibank customer and one of those who had personal data stolen, said he welcomed the company’s refusal to pay the hacker to have the records returned.
“This is really tough for people. I’m a Medibank Private customer as well and it will be of concern that some of this information has been put out there,” Mr Albanese said.
“The company has followed the guidelines effectively, the advice, which is to not engage in a ransom payment. If you go down this road, then you end up with more difficulties potentially across a wider range.”
The thieves had reportedly threatened to expose the diagnoses and treatments of high-profile customers unless a ransom of an undisclosed amount was paid, but Medibank decided there was “only a limited chance” that a ransom would prevent the data being published.
A blogger using the name Extortion Gang posted on the dark web that “data will be publish (sic) in 24 hours”.
Medibank this week updated its estimate of the number of people whose personal information was stolen from four million two weeks ago to 9.7 million.
The stolen data included health claims of almost 500,000 people including diagnoses and treatments, the company said.
Countries recognising Palestine
France, UK, Canada, Australia, Portugal, Belgium, Malta, Luxembourg, San Marino and Andorra
Ten tax points to be aware of in 2026
1. Domestic VAT refund amendments: request your refund within five years
If a business does not apply for the refund on time, they lose their credit.
2. E-invoicing in the UAE
Businesses should continue preparing for the implementation of e-invoicing in the UAE, with 2026 a preparation and transition period ahead of phased mandatory adoption.
3. More tax audits
Tax authorities are increasingly using data already available across multiple filings to identify audit risks.
4. More beneficial VAT and excise tax penalty regime
Tax disputes are expected to become more frequent and more structured, with clearer administrative objection and appeal processes. The UAE has adopted a new penalty regime for VAT and excise disputes, which now mirrors the penalty regime for corporate tax.
5. Greater emphasis on statutory audit
There is a greater need for the accuracy of financial statements. The International Financial Reporting Standards standards need to be strictly adhered to and, as a result, the quality of the audits will need to increase.
6. Further transfer pricing enforcement
Transfer pricing enforcement, which refers to the practice of establishing prices for internal transactions between related entities, is expected to broaden in scope. The UAE will shortly open the possibility to negotiate advance pricing agreements, or essentially rulings for transfer pricing purposes.
7. Limited time periods for audits
Recent amendments also introduce a default five-year limitation period for tax audits and assessments, subject to specific statutory exceptions. While the standard audit and assessment period is five years, this may be extended to up to 15 years in cases involving fraud or tax evasion.
8. Pillar 2 implementation
Many multinational groups will begin to feel the practical effect of the Domestic Minimum Top-Up Tax (DMTT), the UAE's implementation of the OECD’s global minimum tax under Pillar 2. While the rules apply for financial years starting on or after January 1, 2025, it is 2026 that marks the transition to an operational phase.
9. Reduced compliance obligations for imported goods and services
Businesses that apply the reverse-charge mechanism for VAT purposes in the UAE may benefit from reduced compliance obligations.
10. Substance and CbC reporting focus
Tax authorities are expected to continue strengthening the enforcement of economic substance and Country-by-Country (CbC) reporting frameworks. In the UAE, these regimes are increasingly being used as risk-assessment tools, providing tax authorities with a comprehensive view of multinational groups’ global footprints and enabling them to assess whether profits are aligned with real economic activity.
Contributed by Thomas Vanhee and Hend Rashwan, Aurifer
In numbers: PKK’s money network in Europe
Germany: PKK collectors typically bring in $18 million in cash a year – amount has trebled since 2010
Revolutionary tax: Investigators say about $2 million a year raised from ‘tax collection’ around Marseille
Extortion: Gunman convicted in 2023 of demanding $10,000 from Kurdish businessman in Stockholm
Drug trade: PKK income claimed by Turkish anti-drugs force in 2024 to be as high as $500 million a year
Denmark: PKK one of two terrorist groups along with Iranian separatists ASMLA to raise “two-digit million amounts”
Contributions: Hundreds of euros expected from typical Kurdish families and thousands from business owners
TV channel: Kurdish Roj TV accounts frozen and went bankrupt after Denmark fined it more than $1 million over PKK links in 2013
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Who's who in Yemen conflict
Houthis: Iran-backed rebels who occupy Sanaa and run unrecognised government
Yemeni government: Exiled government in Aden led by eight-member Presidential Leadership Council
Southern Transitional Council: Faction in Yemeni government that seeks autonomy for the south
Habrish 'rebels': Tribal-backed forces feuding with STC over control of oil in government territory
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The White Lotus: Season three
Creator: Mike White
Starring: Walton Goggins, Jason Isaacs, Natasha Rothwell
Rating: 4.5/5
The biog
Name: Dr Lalia Al Helaly
Education: PhD in Sociology from Cairo
Favourite authors: Elif Shafaq and Nizar Qabbani.
Favourite music: classical Arabic music such as Um Khalthoum and Abdul Wahab,
She loves the beach and advises her clients to go for meditation.
The five pillars of Islam
David Haye record
Total fights: 32
Wins: 28
Wins by KO: 26
Losses: 4
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Winners
Ballon d’Or (Men’s)
Ousmane Dembélé (Paris Saint-Germain / France)
Ballon d’Or Féminin (Women’s)
Aitana Bonmatí (Barcelona / Spain)
Kopa Trophy (Best player under 21 – Men’s)
Lamine Yamal (Barcelona / Spain)
Best Young Women’s Player
Vicky López (Barcelona / Spain)
Yashin Trophy (Best Goalkeeper – Men’s)
Gianluigi Donnarumma (Paris Saint-Germain and Manchester City / Italy)
Best Women’s Goalkeeper
Hannah Hampton (England / Aston Villa and Chelsea)
Men’s Coach of the Year
Luis Enrique (Paris Saint-Germain)
Women’s Coach of the Year
Sarina Wiegman (England)