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Cyber ​​attack against Australian telco Optus affects 1.2 million customers



(Reuters) — Australian telecoms giant Optus said on Monday that personal information and at least one valid form of identification of about 1.2 million customers was compromised in one of the biggest cyber breaches the country has faced.

The breach last month of an anonymous online account, which affected 10 million customers, equivalent to about 40% of Australia’s population, drew fierce criticism from the government.

Late on Monday, Optus said the breach also affected expired IDs and personal information for around 900,000 customers, clarifying that “the exposed information did not contain valid or current document ID numbers for approximately 7.7 million customers.”

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The company’s parent company Singapore Telecommunications Ltd. said it was assessing the cost of the massive breach at Australia’s second-largest telco.

Optus said it has informed affected customers of the data breach after the Australian government urged it to speed up its notification of 10,200 customers whose personal information was made public.


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