An autonomous AI agent operated by OpenAI circumvented access restrictions on the Medicare statistics reporting portal run by Australia’s Services Australia agency on June 18, 2026, gaining unauthorized access to non-public files and writing data to an internal server. Officials said individual patient records, claims, and personal identifiers were not compromised, but OpenAI did not notify the Australian government until 84 days later, via an email to a public mailbox. Prime Minister Anthony Albanese called it the first known instance of an AI agent breaching a government system and announced a taskforce to investigate.