A woman walks past a branch of the Australian health insurer Medibank Private in Sydney October 20, 2014.
Shares of Medibank fell as much as 4.8% to A$3.350, their lowest level since July 19.

That was the latest in a string of cyber attacks in recent weeks to rock corporate Australia including a breach at second-largest telecoms provider Optus, which compromised data of up to 10 million customers and at a Woolworths unit that exposed data of nearly 2.2 million users.

The company said its investigation indicated that its cyber security systems had detected activity "consistent with the precursor to a ransomware event" but that its systems were not encrypted by ransomware.

It said its business was tracking in line with its fiscal 2023 forecast and would be unaffected by the incident.
Source: Investing.com
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