Google Explains Chrome 148 Privacy Concerns as Users Discover Silent 4GB AI Download
GoogleMonday, 11 May 2026 at 02:32
Google has clarified concerns surrounding Chrome 148 after users discovered the browser was silently downloading an artificial intelligence package of roughly 4GB on supported devices, often without warning or direct consent.
Google Clarifies Some Privacy Concerns with Chrome 148 Update, Especially After On-Device AI Data with 4GB
The issue was first highlighted by security researcher Alexander Hanff, known online as “That Privacy Guy,” who identified a file called weights.bin being downloaded in the background. The file is part of Google’s local AI system powered by Gemini Nano, designed to enable on-device AI features inside Chrome.
Hanff says Chrome checks if your computer can run the feature. If it can, Chrome starts downloading the 4GB AI file in the background when the device is idle. In macOS tests, the download finished in about 14 minutes without asking the user or showing any warning.
This raised privacy concerns because Chrome 148 also removed wording that said local AI data would not be sent to outside servers. Google says this wording change does not mean its privacy rules have changed.
Your Data is Safe, Google Explains
The company states that Chrome’s AI processing still happens entirely on the user’s device and that no AI prompts are sent to Google servers for processing. According to Google, the wording was adjusted because it was too broad and could cause confusion, as Chrome now allows websites to interact with local AI features through new developer tools.
This means the model still runs locally, but websites using these APIs may receive prompts and responses as part of their own services, subject to their individual privacy policies.
Key points
- Chrome 148 can silently download about 4GB of AI model files
- The package supports Gemini Nano for local browser AI features
- Downloads happen automatically on eligible systems
- Google says no AI prompt data is sent to its own servers
- The privacy wording was changed for accuracy, not policy changes
- Deleted AI files may be downloaded again unless experimental settings are changed
Critics argue the larger issue is transparency and user control. Users were not clearly informed before Chrome consumed significant storage space, and many may not know how to disable or manage the feature. There are also concerns about bandwidth consumption, environmental impact, and potential regulatory questions under privacy laws such as the GDPR.
Read also
Google maintains that the system improves privacy by reducing cloud processing, but the silent rollout has left many users questioning whether convenience came at the cost of informed consent.
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