06 May 2026

Google Chrome silently installs a 4 GB AI model on your device without consent

 

Alexander Hanff Writes: Google Chrome silently installs a 4 GB AI model on your device! Two weeks ago I wrote about Anthropic silently registering a Native Messaging bridge in seven Chromium-based browsers on every machine where Claude Desktop was installed. The pattern was: install on user launch of product A, write configuration into the user's installs of products B, C, D, E, F, G, H without asking. Reach across vendor trust boundaries. No consent dialog. No opt-out UI. Re-installs itself if the user removes it manually, every time Claude Desktop is launched.

This week I discovered the same pattern, executed by Google. Google Chrome is reaching into users' machines and writing a 4 GB on-device AI model file to disk without asking. The file is named weights.bin. It lives in OptGuideOnDeviceModel. It is the weights for Gemini Nano, Google's on-device LLM. Chrome did not ask. Chrome does not surface it. If the user deletes it, Chrome re-downloads it.

The legal analysis is the same one I gave for the Anthropic case. The environmental analysis is new. At Chrome's scale, the climate bill for one model push, paid in atmospheric CO2 by the entire planet, is between six thousand and sixty thousand tonnes of CO2-equivalent emissions, depending on how many devices receive the push. That is the environmental cost of one company unilaterally deciding that two billion peoples' default browser will mass-distribute a 4 GB binary they did not request.

Wow! Remember when the Internet blew up because Apple automatically downloaded a free U2 Album? I actually bought that album "Songs of Innocence" It's great - I'm listening to it now! It was a tiny download - which if you weren't a fan could simply delete. Still, loads of folks got in a mighty strop about that. ^^^ THIS is a big deal!!! Not cool Google, not cool! I'm waiting to see who is going to get their knickers in a knot over this huge download - which will affect most folks who have Google Chrome installed...

www.thatprivacyguy.com


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