Chrome is installing a 4 GB local AI model on some of your PCs without asking for permission and will just download it again if you delete it
Google’s Chrome browser has been automatically installing a 4 GB local AI model on user devices without requesting permission or providing visible notification. Security researcher Alexander Hanff discovered the behavior while investigating Chrome’s data usage patterns, identifying the model as Google’s Gemini Nano AI, stored as a weights.bin file in Chrome’s local AppData folders.
The installation occurs silently in the background with no consent dialogs or user awareness. Most troublingly, if users manually delete the model files, Chrome will automatically re-download them without intervention or notification, making permanent removal impossible through conventional means.
Hanff, who runs the ThatPrivacyGuy website focused on privacy issues, flagged the behavior as a significant breach of user autonomy and transparency standards. The model appears to be part of Google’s initiative to integrate AI capabilities directly into Chrome for potential on-device features.
The discovery highlights growing tensions between tech companies’ rapid deployment of new features and users’ expectations of informed consent and system control. For users concerned about storage space, bandwidth consumption, or the privacy implications of running local AI models, the inability to permanently remove files without Chrome reinstalling them represents a loss of device autonomy. The incident raises questions about whether similar undisclosed installations may be occurring elsewhere in Chrome’s ecosystem.