Researchbrowser extensionsdata exfiltrationweb privacysimilarweb
Security Researcher Identifies 287 Extensions Exfiltrating History
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In a recent report, researcher "Q Continuum" identified 287 Chrome extensions that exfiltrate browsing history across an estimated 37.4 million installations. The automated testing pipeline linked data flows to more than 30 collectors — including Similarweb, Semrush, Alibaba, and ByteDance — while about 20 million installs had unknown recipients. The findings call for stronger extension permission scrutiny and better Web Store enforcement.
Scoring Rationale
Comprehensive, high-scope investigation revealing 37.4M installs; limited independent verification and single-researcher sourcing moderately reduce certainty.
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