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JAENES
SSPossible leakDecember 23, 2025 announced

富士フイルムメディカル株式会社Data breach / unauthorized access incident

笹尾 祐太朗の写真Reviewed by Yutaro SasaoWritten by Leak Watch editorial team published ・ updated
Occurred on
June 23, 2025
Announced on
December 23, 2025
Severity
SSLarge-scale compromise of sensitive data such as payment or identity-verification records affecting millions.
Scale
590,000 people
Main impact
Due to unauthorized external access, personal data of 約59万人分 of medical professionals and sales business employees may have been leaked; because it includes names, contact details, birth information, etc., there is a risk of secondary harm such as impersonation or suspicious contact.
Information involved
Full namePhone numberEmail addressDate of birthHome addressUser / member IDPassword
Cause / key point
Possibly caused by an external third party illicitly obtaining account IDs and passwords for the sales management system and accessing that system.
Industry
Manufacturing
Listing / capital
UnlistedParent company: 富士フイルムホールディングス(東証プライム 4901)

富士フイルムメディカル is a subsidiary of 富士フイルムHD.

Sources
Last updated
October 20, 2026

Stock price reaction to the disclosure富士フイルムホールディングス・親会社 / 東証プライム 4901

2025.12.03 〜 2026.01.13Loading…

Stock information is reference data based on Yahoo Finance and may be delayed. This site does not solicit or advise investment and does not guarantee the accuracy or completeness of this information. We accept no liability for any investment decision based on it.

Full namePhone numberEmail addressDate of birthHome addressUser / member IDPasswordHow severity is assessed →

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Written & reviewed

笹尾 祐太朗の写真

Reviewed byYutaro SasaoFounder & CEO, MediaLeap Inc.

CEO of MediaLeap Inc. Working on both sides of web advertising and web media since 2013; founded the company in May 2025.

Review scope: cross-checking against primary sources (official and government announcements), verifying claims stay within the facts, and checking source attribution。Last reviewed:

Written by:Leak Watch editorial team (AI-assisted drafts verified against sources by the editorial team) · Reviewer profile · Request a correction

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Attack method classification: Unauthorized access (method undisclosed)(Breached, but the technique was not identified or disclosed)

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