Toronto District School Board
Data Breach on August 30, 2024
| Data Breach Report | |||
|---|---|---|---|
| Victim | tdsb.on.ca | ||
| Threat Actor | LockBit | ||
| Date Discovered | Aug 30, 2024 | ||
| Description | The Toronto District School Board (TDSB) is the largest and most diverse school board in Canada, serving over 240,000 students in 583 schools in Toronto. | ||
| Leak Size | Unknown |
Credential Exposure for tdsb.on.ca
We've indexed 59,172 @tdsb.on.ca accounts from external breaches, plus 8,474 credentials for tdsb.on.ca itself.
Last checked Aug 16, 2026
| @tdsb.on.ca addresses from external breaches | |
|---|---|
| Third-party breaches | 49,411 accounts · across 499 breaches · 44,900 with a plaintext password · most recent Jun 9, 2026 |
| Combo lists | 26,553 accounts · most recent Aug 15, 2026 |
| Passwords for tdsb.on.ca accounts | |
|---|---|
| Combo lists | 8,204 logins · most recent Aug 15, 2026 |
| Infostealer logs | 2,110 logins · 1,340 infected devices · most recent Aug 8, 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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