Open your file manager and look for a folder called “OptGuideOnDeviceModel”. If you find it, Chrome has been using your storage as its personal server room. Inside that folder sits a file called “weights.bin”, a roughly 4 GB file containing Gemini Nano , Google’s on device AI model. Privacy professional Alexander Hanff discovered and documented this behavior using macOS’s own filesystem event logs, which track every file created or modified at the operating...
