2025 Vikor Scientific — 140K via Catalyst RCM vendor (Everest)
Data compromised
Names, SSNs, DOB, addresses, card numbers, medical records, diagnoses, health insurance
Technical writeup
Vikor Scientific (Charleston molecular diagnostics, now Vanta Diagnostics) affected by breach at vendor Catalyst RCM. Unauthorized access Nov 8-9, 2025 via valid login credentials to Catalyst file management system. Everest ransomware claimed 9.39 GB exfiltrated. Exposed: names, SSNs, DOB, addresses, card numbers, EOB letters, medical records, diagnoses, treatments, health insurance. Discovered Dec 12, 2025.
Root cause
Third-party vendor (Catalyst RCM) breach; credential compromise; Everest ransomware