Zayo Group
Data Breach on June 15, 2026
| Data Breach Report | |||
|---|---|---|---|
| Victim | zayo.com | ||
| Claimed By | ShinyHunters | ||
| Date Discovered | Jun 15, 2026 | ||
| Description | Zayo Group Holdings, Inc. is a telecommunications infrastructure company based in the USA (Colorado), specializing in fiber-based network solutions including dark fiber, wavelengths, Ethernet, IP transit, data transport, and managed network services. | ||
| Leak Size | Unknown |
Credential Exposure for zayo.com
We've indexed 948 @zayo.com accounts from external breaches, plus 96 credentials for zayo.com itself.
Last checked Oct 25, 2026
| @zayo.com addresses from external breaches | |
|---|---|
| Third-party breaches | 901 accounts · across 128 breaches · 822 with a plaintext password · most recent Jan 25, 2026 |
| Combo lists | 172 accounts · most recent Oct 25, 2026 |
| Passwords for zayo.com accounts | |
|---|---|
| Combo lists | 69 logins · most recent Oct 25, 2026 |
| Infostealer logs | 35 logins · 19 infected devices · most recent Oct 18, 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.
Is your organization next?
Zayo 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.