HackingHealthcareHealthcareSupply Chain (3P Vendor)Business Associate (HIPAA)Data ExfiltratedCustomer Data InvolvedPHIIdentity (basic)LowContained

Diana Health, Inc.

bd_7cde2d19e328e52a · schema v1 · pii pii-v2

Severity

Low

Discovered

Dec 18, 2025

Filed

Aug 1, 2026

To disclose

—

Affected

Not disclosed

Confidence

65%

Full breach record for Diana Health, Inc. →2 incidents on file

Diana Health, Inc. notified patients of a data security incident at its vendor, Aesto, LLC, which provides healthcare data migration and archiving services. An unauthorized actor copied protected health information (PHI) and personal identifiers belonging to Diana Health patients stored on Aesto's AWS infrastructure between December 2 and December 18, 2025. Aesto discovered the incident on December 18, 2025. Diana Health's own systems were not impacted. The company is offering complimentary credit monitoring services to affected individuals.

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Incident timeline

undetected · 16 days

Dec 2, 2025

Begins

Dec 18, 2025

Discovered

Aug 1, 2026

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: Diana Health, Inc
norm: diana health

Name: Diana Health, Inc.
norm: diana health
Industry: Healthcarellm

Discovered: Dec 18, 2025
Breach occurred: Dec 2, 2025 – Dec 18, 2025
Undetected for: 16 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 28, 2026
Affected individuals: Not disclosed
Data types: PHIIdentity (basic)
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1041 Exfiltration Over C2 Channel
Threat actor: External
Third party: via Aesto, LLC

During the incident: Commenced a prompt and thorough investigation
Worked very closely with external cybersecurity professionals experienced in handling these types of incidents
Conducted extensive forensic investigation and manual document review
Offering a complimentary membership of Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge
Established a dedicated call center to answer questions about the incident
Changes made: Continually evaluate and modify practices and internal controls to enhance the security and privacy of personal information
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://www.mass.gov/doc/2026-1455-diana-health-inc/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 1, 2026
Raw hash: 94db5c6e5a60eb02a81a0af099fdf23c87076bff8428b349f6b5f42a50aef9c0

Reporting entityDiana Health, Inc

Victim entityDiana Health, Inc.

Incidentdiscovered Dec 18, 2025

Stated responseCommenced a prompt and thorough investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov