Internet Issues- View allLast updated: 2026-03-131 min read

Online Privacy Invasion in Japan: Legal Remedies for Unauthorized Disclosure

Key Takeaways

  • Unauthorized disclosure of names or addresses is a privacy violation subject to damages
  • The right to be forgotten allows search result removal under certain conditions
  • Deletion requests can be made to both site administrators and search engines
  • Doxxing may constitute defamation or violation of personal information protection law
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Japan's right to privacy derives from Constitutional Art. 13 (right to pursue happiness), established in the "Utage no Ato" case (Tokyo District Court 1964): covers private facts that reasonable persons would not want disclosed and are not publicly known. Online violations include doxxing (address/phone disclosure), linking real identity to anonymous accounts, lifestyle exposure, and revenge porn (Revenge Porn Prevention Act: 3 years imprisonment/¥500,000 fine). Remedies: deletion requests to site operators, transmission prevention measures (Provider Liability Act Art. 3(2)), court injunction, search result delisting (Supreme Court 2017.1.31: only when privacy interest clearly outweighs), sender disclosure (Art. 5), and tort damages (¥100K-¥1M+). Human Rights Hotline: 0570-003-110.

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This article provides general legal information and does not constitute legal advice. For specific legal issues, please consult with a qualified attorney.

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