SYDNEY: 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 the highest-profile incidents of AI agents accessing external systems outside the United States, coming on top of several recent breaches globally by rogue AI agents that have alarmed governments and companies.

Prime Minister Anthony Albanese said the OpenAI agent gained unauthorised access to the medical statistics portal of Medicare, Australia’s universal health insurance programme, while conducting research on public medical spending.

“Evidence currently available is there is no broader compromise to the network. Nonetheless, this situation is obviously unacceptable,” Albanese told reporters on Wednesday in New York, where he is attending the UN General Assembly.

Investigations continue and Australia has voiced its “extreme concern about this incident” to OpenAI CEO Sam Altman, Albanese said, adding that he was deeply disappointed by the company’s delay in notifying the government.

“It took until Sept 10 before there was any notification at all,” Albanese said, adding that the investigation would also examine why government systems had failed to detect the breach in the first place.

He also warned that three other government health-related websites may have been impacted by the OpenAI agent’s activity, but did not confirm that had occurred.

In a statement, OpenAI said its “review found no evidence of patient records being accessed”. It added that it “identified activity involving several Australian government websites and services as our models attempted to look up answers. Our models took actions we did not intend.”

Canberra at odds with AI firms

The AI agent breach adds to tensions between Australia and the largest US-owned technology companies. Canberra has already drawn criticism from social media firms and Washington after introducing a world-first ban on social media for children under 16 and new rules that force tech firms to let users switch off algorithm-driven content on their feeds.

The Australian government has set up a task force to investigate the breach and check whether existing network security is adequate for preventing similar incidents.

The breach was announced the same day the world’s leading AI companies warned the United Nations Security Council of the risks AI posed to humanity, appealing for governments to work together to manage the increasingly powerful technology.

Australia has faced a series of hacking attempts on corporations and government-linked firms.

Defence Minister Richard Marles said the Medicare portal that was breached did not contain individual medical claims, benefit payments, personal banking details, or patient medical histories of Australia’s 27 million people.

Instead, the website holds only aggregated data on healthcare use across the country, he said. However, Australia considered the breach serious.

Published in Dawn, September 25th, 2026