Cornerstone Staffing Solutions — Ransomware Incident Claimed by Qilin
- Victim: Cornerstone Staffing Solutions
- Claimed by Qilin
- Date claimed: 2025-11-13
- Country: US
- Sector: Business Services
Qilin listed Cornerstone Staffing Solutions, a Business Services organization, as a victim on its data-leak site (2025-11-13).