Trains and emergency calls affected after major outage at Australia's largest telecoms company

Australia's largest telecommunications provider, Telstra, experienced a major 12-hour outage caused by a software defect in time-keeping servers. The incident disrupted train services and mobile connectivity, prompting an investigation by the Australian Communication and Media Authority.
Why it matters
The outage highlights the vulnerability of critical national infrastructure and the potential risks to emergency services when centralized digital systems fail.
Image source, Getty Image caption, Telstra says Wednesday's outage was 'intermittent' but affected customers across Australia
The report provides a factual account of the outage, including corporate apologies and government responses, without emotive language.
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