A data breach at Australia's second-largest telco may have raised the country's profile as a hacking target, cybersecurity experts said, as federal police began investigating a separate breach at the country's top health insurer. Since Singapore Telecommunications Ltd-owned Optus disclosed last month the theft of about 10 million customer records, equivalent to 40% of the country's population, the country's biggest companies and government bodies have been on high alert for repeat attacks.
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