旭化成セラピューティクス（Pharma DIGITAL）Data breach / unauthorized access incident
- Occurred on
- Unconfirmed
- Announced on
- October 6, 2026
- Severity
- AFinancial and HR records — information that easily translates into monetary damage.
- Scale
- 514,000 people
- Main impact
- Names, workplaces, occupations, etc., of healthcare professionals are affected; up to approximately 51.4万人 of work-attribute data and, in a category that includes email addresses, up to approximately 4.4万人 may be affected. Patient medical information is not included.
- Information involved
- Email addressHome addressFull name
- Cause / key point
- Unauthorized access to the委託先's membership database.About Supply chain attacks (via vendors & shared services)
- Industry
- Healthcare
- Listing / capital
- UnlistedParent company: 旭化成(東証プライム 3407)
旭化成セラピューティクス is a subsidiary of 旭化成.
- Last updated
- October 20, 2026
Stock price reaction to the disclosure旭化成・親会社 / 東証プライム 3407
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Attack method classification: Supply chain attacks (via vendors & shared services)(Compromising the provider instead of the user)
Read the Supply chain attacks (via vendors & shared services) guide and national trends →