*Google Chrome silently installs a 4 GB AI model on your device without
consent. At a billion-device scale the climate costs are insane.
*
4 May 2026
By Alexander Hanff
*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 [1]. 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.
This is, in my professional opinion, a direct breach of Article 5(3) of
Directive 2002/58/EC (the ePrivacy Directive) [2], a breach of the
Article 5(1) GDPR principles of lawfulness, fairness, and transparency
[3], a breach of Article 25 GDPR's data-protection-by-design obligation
[3], and an environmental harm of a magnitude that would be a notifiable
event under the Corporate Sustainability Reporting Directive (CSRD) for
any in-scope undertaking [4].
[...]
continua qui:
https://www.thatprivacyguy.com/blog/chrome-silent-nano-install/
