Summary
On October 4, 2025, the ransomware group Qilin publicly claimed responsibility for an attack targeting
Corban OneSource, a U.S.-based company specializing in human resources services.
According to the threat actor’s post, they intend to release sensitive data unless negotiations are initiated.
Incident Report
| Field | Details |
|---|---|
| Target | Corban OneSource |
| Domain | corbanonesource.com |
| Country | USA |
| Attacking Group | Qilin |
| Date Reported | October 4, 2025 |
| Threat Actor Statement | “The full leak will be published soon, unless a company representative contacts us via the channels provided.” |
About Corban OneSource
Corban OneSource is a leading provider of comprehensive HR outsourcing services, including payroll administration, employee benefits management, and HR support, aimed at reducing risks and improving organizational efficiency.
About Qilin Group
The Qilin ransomware group is known for targeting organizations across various sectors, demanding ransoms and threatening data leaks to compel victims to meet their demands.
Proactive Responses to Ransomware Threats
Organizations can proactively respond to such threats through vigilant dark web monitoring. This includes regular scans for data breaches and potential threats. We recommend using tools like the email breach checker available at MSP DarkIntel to monitor your company’s exposure and take necessary actions to protect sensitive information.
Recommendations
- Monitor your domains and email addresses for exposure using reputable threat intelligence tools.
- Conduct a full compromise assessment and incident response drill internally.
- Verify backups and ensure they are offline and ransomware-resistant.
- Educate staff on phishing, social engineering, and lateral movement techniques used by groups like Qilin.
- Engage with cyber forensics and legal counsel before initiating contact with threat actors.
Check Your Exposure
Wondering if your organization or employees are impacted by recent breach activity?
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Check domain-wide breach exposure:
mspdarkintel.com/domain-breach-scan -
Check if an email was breached:
mspdarkintel.com/email-breach-scan
Disclaimer
The MSPDarkIntel team does not engage in the exfiltration, downloading, taking, hosting, viewing, reposting, or disclosure of any stolen information.
All breach data reported here is sourced from publicly available threat intelligence feeds for awareness and early-warning purposes only.
Our goal is to inform organizations of emerging threats so they can take timely defensive action.
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