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The Unaudited Extension Problem
The Chrome Web Store contains over 180,000 extensions. Many of these extensions — particularly those adding AI capabilities to web browsing — request broad permissions: access to all website content, clipboard access, storage access, and network request interception.
USENIX 2025 research found that 83% of Chrome extensions with broad permissions have never undergone a security audit. These extensions were created, published, and installed by millions of ...