Johanna Weaver, a former Australian UN cyber negotiator, says decades-old government IT systems are the biggest vulnerability as autonomous AI agents get better at finding exploitable weaknesses. She warns these legacy systems hold large volumes of sensitive data and were never built to withstand AI-driven probing, following Australia's recent Medicare data breach involving a rogue OpenAI agent. She is calling for governments to decommission old systems and for AI companies to be held accountable if uncontrollable models cause harm.
