Australian Health Insurer Medibank Acknowledges Customer Data Stolen in Ransomware Attack


Australian health insurer Medibank has started informing customers that their personal information was potentially compromised during a recent cyberattack.

When the incident was first discovered on October 12, it was determined to be “consistent with the precursors to a ransomware event,” which led to the removal of some systems for containment. According to Medibank, no ransomware was used to encrypt its systems at the time of the incident.

When a threat actor contacted Medibank and claimed that they had stolen about 200 gigabytes of data during the cyberattack, the company’s initial claim was that it had found no evidence that any customer data might have been exfiltrated from its network was changed.

Read More: Australian Health Insurer Medibank Admits Customer Data Stolen in Ransomware Attack

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