Social EngineeringPhishingCustomer Data InvolvedData ExfiltratedIDENTITY_BASICIDENTITY_GOVERNMENTHEALTH_BASICFINANCIAL_ACCOUNTMediumContained
Quantum Health, Inc.
bd_73b571b03dc8be54 · schema v1 · pii pii-v1
Full breach record for Quantum Health, Inc. →Quantum Health, Inc. notified Massachusetts residents of a data breach involving unauthorized access to its IT network. The incident was triggered by a vishing call on May 29, 2026, leading to the exfiltration of personal and health information, including SSNs and insurance details. The breach was discovered on June 1, 2026, and notifications were sent on July 8, 2026. Quantum Health engaged forensic experts and is offering complimentary identity monitoring services.
Massachusetts clock✓ MA AG ≤30d4 weeks discovery → filing
⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident
Source provenance
- Source URL
- https://www.mass.gov/doc/2026-1250-quantum-health-inc/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
- Filed at
- Jul 1, 2026
- Raw hash
- e7a043274db22b9ac3f094408220bd3f43ae093813e7a4f8ad064b9f0a2fe836
Reporting entity
- Name
- Quantum Health, Inc.norm: quantum health
Victim entity
- Name
- Quantum Health, Inc.norm: quantum health
Incident
- Discovered
- Jun 1, 2026
- Materiality determined
- —
- Notification sent
- Jul 8, 2026
- Affected individuals
- Not disclosed
- Data types
- IDENTITY_BASICIDENTITY_GOVERNMENTHEALTH_BASICFINANCIAL_ACCOUNT
- Attack vector
- Phishing
- MITRE ATT&CK
- T1566.002 Spearphishing LinkT1078 Valid Accounts
- Threat actor
- ExternalFinancial
- Initial access
- phishing_link
Compliance
- Time to disclose
- 4 weeks(30 days from discovery to filing)
- Compliance flags
- MA AG ≤30d
- Discovery-date grounding
- unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Extraction provenance
- Status
- No extraction artifact recorded for this disclosure.