OpenAI has apologised for a breach of Australian government websites, including Medicare – but its chief executive Sam Altman won’t answer questions from a parliamentary committee about how the hack happened. Plus, the Greens are in the market for a new leader after Larissa Waters steps down.

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OpenAI apologises for Medicare hack amid warnings over Australia’s vulnerable government systems

OpenAI to send chief strategy officer to explain Medicare breach

OpenAI scraps release of new AI model over safety concerns

Greens to choose new leader 'in days' at Sydney retreat

Commentary by Richard Ferguson: Greens desperately look for their Zohran Mamdani. They have Mehreen Faruqi instead

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