HackingHealthcareHealthcareBusiness Associate (HIPAA)Customer Data InvolvedDelayed DiscoveryHealth (basic)Identity (basic)Government IDPHIMediumContained

Edwards County Medical Center

bd_abca7fca947571f4 · schema v1 · pii pii-v2

Severity

Medium

Discovered

—

Filed

Aug 1, 2026

To disclose

—

Affected

4state residents only

Linked

3 filings

Confidence

65%

Full breach record for Edwards County Medical Center →

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

Dec 2, 2025

Begins

Aug 1, 2026

Filed

This filing is one of 3 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

New Hampshire State AGbd_83ddfb62723fe1312026-08-26 · +25dVerified
Indiana State AGbd_d341485af6c129ac2026-08-26 · +25dVerified

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

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

Discovered: —
Breach occurred: Dec 2, 2025 – Dec 18, 2025
Materiality determined: —
Notification sent: —
Affected individuals: 4state-resident count only
Data types: Health (basic)Identity (basic)Government IDPHI
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.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Massachusetts State AGAug 1 · first · this page

New Hampshire State AG+25d

Indiana State AG+25d

Pattern: first filing Aug 1 (MA), last Aug 26 (IN) — a 25-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityEdwards County Medical Center

Victim entityEdwards County Medical Center

IncidentUnknown

Stated responseCommenced a prompt and thorough investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov