Ciena
Data Breach on July 10, 2023
| Data Breach Report | ||
|---|---|---|
| Victim | ciena.com | |
| Threat Actor | CL0P | |
| Date Discovered | Jul 10, 2023 | |
| Description | Ciena Corporation provides equipment, software, and services that support the transport, switching, aggregation, service delivery, and management of voice, video, and data traffic on communications networks worldwide. | |
| Leak Size | Unknown |
Credential Exposure for ciena.com
We've indexed 2,894 @ciena.com accounts from external breaches, plus 336 credentials for ciena.com itself.
Last checked Aug 16, 2026
| @ciena.com addresses from external breaches | |
|---|---|
| Third-party breaches | 2,708 accounts · across 297 breaches · 2,350 with a plaintext password · most recent Jan 25, 2026 |
| Combo lists | 903 accounts · most recent Aug 15, 2026 |
| Passwords for ciena.com accounts | |
|---|---|
| Combo lists | 216 logins · most recent Aug 15, 2026 |
| Infostealer logs | 159 logins · 83 infected devices · most recent Aug 7, 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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