Kosmas
Data Breach on June 02, 2025
| Data Breach Report | |||
|---|---|---|---|
| Victim | kosmas.cz | ||
| Claimed By | Lynx | ||
| Date Discovered | Jun 02, 2025 | ||
| Description | Kosmas is a leading Czech book distributor and retailer operating both online and through 36 physical bookstores. | ||
| Leak Size | Unknown |
Credential Exposure for kosmas.cz
We've indexed 40 @kosmas.cz accounts from external breaches, plus 728 credentials for kosmas.cz itself.
Last checked Oct 4, 2026
| @kosmas.cz addresses from external breaches | |
|---|---|
| Third-party breaches | 27 accounts · across 24 breaches · 18 with a plaintext password · most recent Apr 24, 2024 |
| Combo lists | 20 accounts · most recent Sep 12, 2026 |
| Passwords for kosmas.cz accounts | |
|---|---|
| Combo lists | 560 logins · most recent Oct 4, 2026 |
| Infostealer logs | 207 logins · 165 infected devices · most recent Oct 1, 2026 |
Logins may belong to customers or to staff, and the data doesn't say which. None of this is necessarily connected to the ransomware attack above.
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