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Is マイナポータル safe?

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

Clean risk

Official Japanese government extension for My Number Card (マイナンバーカード) authentication. Bridges web pages on specific government domains to a locally installed native application via native messaging. No external network requests, no data collection, and content scripts are restricted to a defined list of Japanese government and partner domains.

0Risk

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

Publishers can request a review.

Updated 10 April 2026fjjibalalngebiaophebgkkohaaggphf

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