By Hassam Nasir
Publication Date: 2026-05-10 01:02:00
It seems Google has decided that your PC needs a hefty dose of AI, whether you asked for it or not. Security researcher Alexander Hanff, also known as “That Privacy Guy,” has published a new report claiming that Google Chrome silently downloads a roughly 4GB AI model onto users’ machines without notice or consent.
The file in question is called weights.bin, and it is part of Google’s on-device Gemini Nano AI model. Chrome stores it inside a folder called OptGuideOnDeviceModel, located deep in your system’s Chrome User Data directory. On Windows, that path is C>Users>AppData>Local>Google>Chrome>User Data. The model is used to power AI features like scam detection locally on your device, rather than sending your data to the cloud.
Perhaps more concerning is what happens if you try to get rid of it. According to Hanff’s research, deleting the file does nothing, as Chrome simply re-downloads it automatically. The only way to stop this is to disable the feature through…
