Taiwan Otsuka Pharmaceutical
thegentlemen listed this organization on its leak site on Oct 16, 2026.
- Listing date
- Oct 16, 2026
- Attack date
- Oct 14, 2026
Listing text
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.
About the group
thegentlemen posted its first listing on Sep 9, 2025 and has listed 1,253 organizations to date.
The Gentlemen is a RaaS group that emerged in July–August 2025, rapidly claiming over 320 victims across 17+ countries by offering affiliates a 90% revenue share, deploying a Go-based locker against Windows, Linux, NAS, and BSD systems; a compromised C2 server in 2026 revealed more than 1,570 linked victims.
Learning center
What does this listing mean?
Ransomware groups move data out of the organization before encrypting systems and threaten to publish it if the ransom is not paid. This method is called double extortion.
The listing shows that the group claims to have targeted the organization. Whether the data was published is shown by the later status of the listing.
What should you do if your organization is listed on a leak site?
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- Isolate affected systems and preserve logs without deleting them.
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- Make any decision about the ransom demand together with legal, management and incident response.
- Do not bring systems back online before the attacker’s entry point is closed.
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