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 947 @zayo.com accounts from external breaches, plus 87 credentials for zayo.com itself.
Last checked Sep 6, 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 | 171 accounts · most recent Aug 23, 2026 |
| Passwords for zayo.com accounts | |
|---|---|
| Combo lists | 62 logins · most recent Aug 30, 2026 |
| Infostealer logs | 30 logins · 19 infected devices · most recent Aug 30, 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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