FACTBOX — OpenAI data breach latest in long list of hacks in Australia

SYDNEY, Sept 24 (Reuters) — Australia said on Thursday an OpenAI agent breached a government health data portal in June, gaining unauthorised access to files, in what could be the first known instance of an AI agent hacking a government website. The breach is one of dozens in recent years affecting some of Australia's biggest companies. Experts have previously said the frequency and scale of the attacks suggest the country's understaffed cybersecurity industry seems unequipped to combat such hacks. Here is a list of the largest data breaches in recent years: September 2022: Optus Australia's second-largest mobile operator Optus, owned by Singapore Telecommunications, reported a data breach that affected 9.5 million customers, about 40% of the nation's population. The exposed data included home addresses, drivers' licences and passport numbers. October 2022: Woolworths Australia's biggest grocer Woolworths said its majority-owned online retailer MyDeal identified that a "compromised user credential" was used to access its systems, exposing email addresses, phone numbers and delivery addresses of about 2.2 million customers. November 2022: Medibank Australia's largest health insurer