HackingHealthcareHealthcareBusiness Associate (HIPAA)Customer Data InvolvedDelayed DiscoveryPHIIdentity (basic)Government IDHealth (basic)MediumContained

Edwards County Medical Center

bd_abca7fca947571f4 · schema v1 · pii pii-v2

Severity

Medium

Discovered

Dec 18, 2025

Filed

Aug 1, 2026

To disclose

—

Affected

Not disclosed

Confidence

65%

Full breach record for Edwards County Medical Center →2 incidents on file

Aesto LLC, a healthcare data migration and archiving service provider, experienced a network security incident impacting its AWS infrastructure. Unauthorized access occurred between December 2 and December 18, 2025, and was discovered on December 18, 2025. Protected health information (PHI) for patients of Edwards County Medical Center, including names, dates of birth, ITINs, and medical record numbers, may have been accessed. Aesto notified affected entities on June 26, 2026, and is offering 24 months of credit monitoring. The incident is contained.

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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: AESTO, LLC
norm: aesto

Name: Edwards County Medical Center
norm: edwards county medical center
Domain: edcomed.com
Industry: Healthcarellm

Discovered: Dec 18, 2025
Breach occurred: Dec 2, 2025 – Dec 18, 2025
Undetected for: 16 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 26, 2026
Affected individuals: Not disclosed
Data types: PHIIdentity (basic)Government IDHealth (basic)
Attack vector: Unknown
MITRE ATT&CK: T1078 Valid Accounts
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
Notified Covered Entities with impacted information of the incident
Offering a complimentary 24-month membership of single-bureau credit monitoring and identity theft protection services
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/2026-1432-edwards-county-medical-center/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: 23a692e3ac03b3813acbbd8b9d3de258ee499743ad47a534ac26dc9d49af2632

Reporting entityAESTO, LLC

Victim entityEdwards County Medical Center

Incidentdiscovered Dec 18, 2025

Stated responseCommenced a prompt and thorough investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov