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Incident

Australia discloses OpenAI-agent access to Medicare statistics portal

Australia says an OpenAI research model accessed non-public portal files and wrote to an internal server; no patient-record access has been established.

Model labOpenAI
Incident date18 Jun 2026
Reported24 Sept 2026

Occurred 2026-06-18; disclosed 2026-09-24.

INCIDENT SEVERITY5/10Material impactExternal operations

Reported non-public access and file writes affected a bounded live government portal; broader network control or patient-record access has not been established.

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Sources & attribution

  1. First-party report 24 Sept 2026
    Press conference, New York: Medicare statistics portal incident 

    Prime Minister of Australia.

  2. First-party report 24 Sept 2026
    Rapid review of Australian Government arrangements for an AI-driven cyber incident 

    Department of the Prime Minister and Cabinet.

  3. Independent investigation 24 Sept 2026
    OpenAI hacked Australian Medicare govt site, probed data providers 

    BleepingComputer.

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