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Is Web Signer safe?

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

Medium risk

Legitimate digital signature extension with postMessage listeners lacking origin validation, creating potential attack surface for malicious websites.

v2.17.1Chrome Web Store
45Risk

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

Publishers can request a review.

Updated 10 April 2026bbafmabaelnnkondpfpjmdklbmfnbmol

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