The claim
マイナンバーカードの4桁暗証番号は総当たり攻撃ですぐ解除される
Original review summary
The review says a four-digit numeric PIN could be guessed quickly in a general brute-force attack, but a My Number Card must be physically present and locks after three consecutive incorrect attempts. It concludes that these safeguards prevent the claimed quick brute-force unlocking.[S1]
Research date:
Sources and attribution
- [S1] 日本ファクトチェックセンター original review
Original review · Retrieved October 16, 2026