‼️ Claude Opus 5 helped three researchers build an image exploit that took over OpenAI's public help forum server. A flaw in OpenAI's own login then let them take over staff ChatGPT/Codex accounts and reach an internal code repo — in under 72 hours. Here's how the chain worked → https://thehackernews.com/2026/09/claude-opus-5-helped-researchers-take.html