This piece is adapted with permission from the Substack Mind and Iron, a weekly newsletter about the future and how to think about it. You can sign up for free here. On Wednesday the Australian prime minister came to New York for the UN General Assembly and made what’s becoming an increasingly common revelation: An OpenAI agent had hacked into some files. The pesky thing was looking around for some data on healthcare costs, found a wall in Australia’s Medicare database and decided simply to hop over it, easy peasy. Then it went back to its controllers, the new files in tow. (It also wrote some new files while it was in there.) The agent…