Mainline Information Systems
Data Breach on February 12, 2025
| Data Breach Report | |||
|---|---|---|---|
| Victim | mainline.com | ||
| Claimed By | Play | ||
| Date Discovered | Feb 12, 2025 | ||
| Description | Mainline Information Systems provides comprehensive information technology solutions, including server, storage, software, services, and financing, to over 3,500 clients nationwide. | ||
| Leak Size | Unknown |
Credential Exposure for mainline.com
We've indexed 553 @mainline.com accounts from external breaches, plus 3 credentials for mainline.com itself.
Last checked Aug 23, 2026
| @mainline.com addresses from external breaches | |
|---|---|
| Third-party breaches | 543 accounts · across 124 breaches · 492 with a plaintext password · most recent Jan 31, 2026 |
| Combo lists | 145 accounts · most recent Aug 22, 2026 |
| Passwords for mainline.com accounts | |
|---|---|
| Combo lists | 2 logins · most recent Aug 1, 2026 |
| Infostealer logs | 1 logins · 1 infected devices · most recent Nov 24, 2025 |
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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