Australian Health Insurer Medibank Suffers Breach Exposing 3.9 Million Customers' Data

Australian #health #insurance firm #Medibank on Wednesday disclosed that the personal information of #all of its #customers had been unauthorizedly accessed following a recent #ransomware attack.

In an update to its ongoing investigation into the incident, the firm said the attackers had access to "significant amounts of health claims data" as well as #personaldata belonging to its ahm health insurance subsidiary and international students.

Medibank, which is one of the largest Australian private health insurance providers, serves about 3.9 million customers across the country.

"We have evidence that the criminal has removed some of this data and it is now likely that the criminal has stolen further personal and health claims data," the company further added. "As a result, we expect that the number of affected customers could grow substantially."

The company also said it's continuing its probe to determine what specific data has been stolen in the attack and that it will directly notify affected customers of the matter.

The development comes as the incident has become the subject of an investigation by the Australian Federal Police (AFP), with Medibank acknowledging that it has been contacted by a criminal actor claiming to have siphoned 200GB of data.

"That data includes first names and surnames, addresses, dates of birth, Medicare numbers, policy numbers, phone numbers, and some claims data," it noted. "This claims data includes the location of where a customer received medical services, and codes relating to their diagnosis and procedures."

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