Quantum Health, Inc. Data Breach – Investigated by Federman & Sherwood
August 18, 2026 – Federman & Sherwood, a national consumer protection law firm, is investigating the Quantum Health, Inc. data breach following a notice filed with the California Attorney General.
On June 1, 2026, Quantum Health detected a service outage affecting certain internal and external systems. Its investigation determined that the outage was connected to unauthorized access to its IT network after a user responded to a vishing call on May 29, 2026. The unauthorized party accessed and acquired files from certain Quantum Health systems between May 29 and June 1, 2026. On July 8, 2026, Quantum Health determined that some of the affected files contained personal information.
The information potentially compromised includes names, health insurance information, medical and health information, dates of birth, email addresses, physical addresses, telephone numbers, demographic information, and potentially Social Security numbers. Health information may include treatment information, diagnoses, prescriptions, provider names, and dates of service.
Quantum Health reported the incident to federal law enforcement and states that it is enhancing its security protocols and implementing additional security measures. Affected individuals are being offered complimentary Kroll identity monitoring, including credit monitoring, fraud consultation, and identity theft restoration. The public notice does not specify the duration of the services because the duration remains an unresolved template field.
Federman & Sherwood is investigating whether Quantum Health, Inc. implemented reasonable cybersecurity safeguards to protect sensitive personal and health information and whether additional security measures could have prevented this incident. The firm is also evaluating potential legal claims on behalf of affected individuals.
The potentially compromised information may include:
- Names
- Social Security numbers
- Dates of birth
- Contact information (telephone numbers, physical addresses, email addresses)
- Medical information
- Health insurance information
- Other sensitive information
What is Quantum Health, Inc.?
Quantum Health is a healthcare navigation and care coordination company.
Individuals affected by the Quantum Health, Inc. data breach may have legal rights and are encouraged to contact Federman & Sherwood to learn more about their options.
Phone: 1-800-237-1277 | Email: info@federmanlaw.com