St Stephen's International
Data Breach on November 05, 2025
| Data Breach Report | |||
|---|---|---|---|
| Victim | sis.edu | ||
| Threat Actor | TheGentlemen | ||
| Date Discovered | Nov 05, 2025 | ||
| Description | St Stephen’s International is an international education organization offering K-12 schooling with a Singapore-style curriculum-INTERCULTURAL education model, supporting students in multiple countries with a focus on 21st-century skills and global citizenship. | ||
| Leak Size | Unknown |
Credential Exposure for sis.edu
We've indexed 420 @sis.edu accounts from external breaches, plus 12 credentials for sis.edu itself.
Last checked Aug 16, 2026
| @sis.edu addresses from external breaches | |
|---|---|
| Third-party breaches | 320 accounts · across 93 breaches · 267 with a plaintext password · most recent Feb 24, 2025 |
| Combo lists | 182 accounts · most recent Aug 15, 2026 |
| Passwords for sis.edu accounts | |
|---|---|
| Combo lists | 12 logins · most recent Aug 7, 2026 |
| Infostealer logs | 1 logins · 1 infected devices · most recent Nov 25, 2022 |
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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