Eisai
Data Breach on February 25, 2026
| Data Breach Report | |||
|---|---|---|---|
| Victim | eisai.com | ||
| Threat Actor | Atomsilo | ||
| Date Discovered | Feb 25, 2026 | ||
| Description | Eisai Co., Ltd. is a pharmaceutical research and manufacturing company based in Japan, producing innovative medicines. | ||
| Leak Size | 1.5TB |
Credential Exposure for eisai.com
We've indexed 1,343 @eisai.com accounts from external breaches.
Last checked Aug 23, 2026
| @eisai.com addresses from external breaches | |
|---|---|
| Third-party breaches | 1,319 accounts · across 159 breaches · 1,241 with a plaintext password · most recent Dec 18, 2025 |
| Combo lists | 423 accounts · most recent Aug 22, 2026 |
None of this is necessarily connected to the ransomware attack above.
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