Copper Mountain
Data breach claim reported January 26, 2023
| Data Breach Report | ||
|---|---|---|
| Victim | cumtn.com | |
| Claimed By | ALPHV | |
| Date Discovered | Jan 26, 2023 | |
| Description | Copper Mountain Mining Corporation is a TSX/ASX listed copper producer, developer and explorer. | |
| Leak Size | 450GB |
Breach claims on this page are published by threat actors and haven't been verified by Breachsense.
Credential Exposure for cumtn.com
We've indexed 16 @cumtn.com accounts from external breaches.
Last checked Nov 8, 2026
| @cumtn.com addresses from external breaches | |
|---|---|
| Third-party breaches | 14 accounts · across 18 breaches · 11 with a plaintext password · most recent Feb 15, 2024 |
| Combo lists | 6 accounts · most recent Oct 28, 2026 |
None of this is necessarily connected to the ransomware attack above.
Is your organization next?
Check if your company's credentials have been exposed in this or other data breaches.
Continuous dark web monitoring alerts you when we find leaked credentials or session tokens for your company.