Kier Group
Data Breach on November 07, 2025
| Data Breach Report | |||
|---|---|---|---|
| Victim | kier.co.uk | ||
| Threat Actor | CL0P | ||
| Date Discovered | Nov 07, 2025 | ||
| Description | Kier Group plc is a infrastructure-services, construction and property-development company based in the UK that designs, builds and maintains vital public-infrastructure across the UK. | ||
| Leak Size | Unknown |
Credential Exposure for kier.co.uk
We've indexed 2,541 @kier.co.uk accounts from external breaches, plus 98 credentials for kier.co.uk itself.
Last checked Aug 16, 2026
| @kier.co.uk addresses from external breaches | |
|---|---|
| Third-party breaches | 2,334 accounts · across 221 breaches · 2,136 with a plaintext password · most recent Jan 8, 2026 |
| Combo lists | 1,287 accounts · most recent Aug 15, 2026 |
| Passwords for kier.co.uk accounts | |
|---|---|
| Infostealer logs | 56 logins · 38 infected devices · most recent Aug 4, 2026 |
| Combo lists | 49 logins · most recent Aug 5, 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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