COS
Data breach claim reported July 21, 2022
| Data Breach Report | ||
|---|---|---|
| Victim | cos.net.au | |
| Claimed By | BlackBasta | |
| Date Discovered | Jul 21, 2022 | |
| Description | COS is Australia’s largest family owned and operated office products supplier. | |
| Leak Size | N/A |
Breach claims on this page are published by threat actors and haven't been verified by Breachsense.
Credential Exposure for cos.net.au
We've indexed 201 @cos.net.au accounts from external breaches, plus 131 credentials for cos.net.au itself.
Last checked Nov 8, 2026
| @cos.net.au addresses from external breaches | |
|---|---|
| Third-party breaches | 138 accounts · across 49 breaches · 128 with a plaintext password · most recent Dec 18, 2025 |
| Combo lists | 113 accounts · most recent Nov 7, 2026 |
| Passwords for cos.net.au accounts | |
|---|---|
| Combo lists | 75 logins · most recent Nov 8, 2026 |
| Infostealer logs | 60 logins · 34 infected devices · most recent Nov 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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