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Is uMatrix safe?

This security report analyses whether uMatrix is safe to install on your browser. We check uMatrix for malicious behaviour, data exfiltration, suspicious permissions, and known vulnerabilities so you can decide if uMatrix is safe for your personal or enterprise fleet.

Clean risk

uMatrix is a legitimate, open-source privacy and security tool by Raymond Hill (author of uBlock Origin). The extension provides granular control over network requests and implements privacy features like referrer spoofing and cookie blocking as part of its intended functionality.

v1.4.4Chrome Web Store
0Risk

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Updated 10 April 2026ogfcmafjalglgifnmanfmnieipoejdcf

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