Taiwan Otsuka Pharmaceutical
otsuka.com.tw Revenue $278.3 Million Otsuka Pharmaceutical (Taiwan) Co., Ltd. Taiwanese arm of Japan's Otsuka Holdings (TSE: 4578), operating since 1974 — first as a JV, wholly owned since 1995. HQ in Taipei's Daan District with plants in Guandu and Kaohsiung, ~500–1,000 staff, capital NT$531M, president Ryoichi Fukumoto. Core business: prescription drugs (Abilify, Mucosta, nephrology/oncology lines), consumer brands (Pocari Sweat, Nature Made, CalorieMate, SOYJOY), medical devices, and a new insurance services arm. The group posted record 2025 pharma results (+22% revenue, +43% operating profit) across 84+ countries. Taiwan-specific financials aren't published (subsidiary of a listed parent), but the entity has 52 years on the market, TFDA-registered products, and a solid employer brand with active hiring since 2024.
Incident Details
- Threat Group
- thegentlemen
- Victim / Organization
- Taiwan Otsuka Pharmaceutical
- Website / Domain
- otsuka.com.tw
- Industry Sector
- Healthcare
- Country / Region
- 🇹🇼 TW
- Date Discovered
- Friday, October 16, 2026
What This Listing Means
Posting on thegentlemen's ransomware leak site typically signals that the threat actor claims to have:
- ▸Gained unauthorized access to the organization's network via phishing, exposed credentials, or an unpatched vulnerability
- ▸Exfiltrated sensitive data — potentially including financial records, PII, customer data, or trade secrets
- ▸Deployed ransomware to encrypt systems and disrupt operations
- ▸Issued a ransom demand with a deadline to publish all stolen data publicly if unpaid
Open Source Investigation
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