Quark
Data breach claim reported July 28, 2023
| Data Breach Report | ||
|---|---|---|
| Victim | quark.com | |
| Claimed By | CL0P | |
| Date Discovered | Jul 28, 2023 | |
| Description | Quark is a content automation software, offers procedure management, digital publishing, financial services, and life sciences solutions. | |
| Leak Size | 57GB |
Breach claims on this page are published by threat actors and haven't been verified by Breachsense.
Credential Exposure for quark.com
We've indexed 770 @quark.com accounts from external breaches, plus 773 credentials for quark.com itself.
Last checked Nov 8, 2026
| @quark.com addresses from external breaches | |
|---|---|
| Third-party breaches | 742 accounts · across 105 breaches · 697 with a plaintext password · most recent Jan 25, 2026 |
| Combo lists | 182 accounts · most recent Nov 8, 2026 |
| Passwords for quark.com accounts | |
|---|---|
| Combo lists | 561 logins · most recent Nov 8, 2026 |
| Infostealer logs | 242 logins · 182 infected devices · most recent Nov 8, 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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