Inside your Chrome browser, there's a four-gigabyte AI model called Gemini Nano that you didn't install, weren't told about, and can't permanently delete. Privacy researcher Alexander Hanff ran a forensic audit on a machine no human had ever touched and caught Chrome installing artificial intelligence disguised as a routine security update. And when you delete it, it comes back. 

Sources linked below. 
Alexander Hanff's Chrome investigation: https://www.malwarebytes.com/blog/news/2026/05/google-chromes-silent-4gb-ai-download-problem (Coverage of his original post from ThatPrivacyGuy.com)

Alexander Hanff's Anthropic/Claude Desktop investigation: https://www.malwarebytes.com/blog/news/2026/04/researcher-claims-claude-desktop-installs-spyware-on-macos

Hacker News discussion (Chrome AI storage): https://news.ycombinator.com/item?id=48084710 (Main discussion thread)

The Verge - Chrome's AI features hogging 4GB: https://www.theverge.com/tech/924933/google-chrome-4gb-gemini-nano-ai-features

Chrome Prompt API documentation: https://developer.chrome.com/docs/ai/built-in

EU GDPR consent requirements: https://gdpr.eu/gdpr-consent-requirements/

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