Vishing Attack Gives Threat Actor Access to Quantum Health Network
- Source: HIPAA Journal
- Date: 2026-08-17
- Reliability: Tier 2/4 — Established cyber journalism
- Entity: Quantum Health (healthcare navigation and care coordination)
Summary
Quantum Health, a Dublin, Ohio-based healthcare navigation and care coordination company, disclosed a cybersecurity incident identified in May 2026 that began with a vishing attempt. An attacker called a Quantum Health user on 29 May 2026 and tricked them into providing network access; between 29 May and 1 June the unauthorised third party accessed the network and acquired files, and on 1 June Quantum Health experienced a network disruption affecting internal and external systems.
Key Facts
- Incident began with a vishing (voice-phishing) call tricking a user into granting access
- Unauthorised access from 29 May to 1 June 2026; files acquired
- Network disruption on 1 June 2026 affecting internal and external systems
- Threat group not named; no ransomware group claimed responsibility
Sector
Healthcare — Vishing-initiated network compromise of a healthcare company.
Source
https://www.hipaajournal.com/quantum-health-precision-imaging-centers-heart-america-data-breaches/
Reliability
Tier 2 — Established cyber journalism; company disclosed the incident.
Date
2026-08-17
Related Pages
- Beverly Hills Plastic Surgeon Confirms Data Theft Extortion Incident — Healthcare data-theft incident
- Poland Probes Mydr Healthcare Software Breach Potentially Affecting 19 Million P — Healthcare data breach
Sources: raw/digests/Cyber-Digest-2026-08-18