Lanmark Group
Data Breach on December 17, 2025
| Data Breach Report | |||
|---|---|---|---|
| Victim | lanmarkgc.com | ||
| Threat Actor | Sinobi | ||
| Date Discovered | Dec 17, 2025 | ||
| Description | Lanmark Group, Inc. is a full-service general contracting and construction firm based in the USA (New York), providing general construction, project management and renovation services for municipal and private sector clients. | ||
| Leak Size | Unknown |
Credential Exposure for lanmarkgc.com
We've indexed 11 @lanmarkgc.com accounts from external breaches.
Last checked Aug 16, 2026
| @lanmarkgc.com addresses from external breaches | |
|---|---|
| Third-party breaches | 11 accounts · across 19 breaches · 10 with a plaintext password · most recent Aug 18, 2024 |
| Combo lists | 4 accounts · most recent Nov 25, 2025 |
None of this is necessarily connected to the ransomware attack above.
Is your organization next?
Lanmark Group was breached. Check if your company's credentials have been exposed in this or other data breaches.
Check your exposure →Continuous dark web monitoring alerts you when we find leaked credentials or session tokens for your company.