HackingHealthcareHealthcareSupply Chain (3P Vendor)Business Associate (HIPAA)Customer Data InvolvedData ExfiltratedPHIIdentity (basic)Health (basic)LowContained

Graham County Hospital

bd_05527c3477a7fbe1 · schema v1 · pii pii-v2

Severity

Low

Discovered

Dec 18, 2025

Filed

Sep 1, 2026

To disclose

—

Affected

1state residents only

Linked

6 filings

Confidence

68%

Full breach record for Graham County Hospital →

Graham County Hospital notified patients that its vendor, Aesto, LLC, experienced a network security incident affecting AWS infrastructure. Unauthorized access to protected health information (PHI) occurred between Dec 2, 2025, and Dec 18, 2025. Aesto detected the issue on Dec 18, 2025, and confirmed the scope on May 26, 2026. Affected data includes names and PHI. Credit monitoring is offered.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 16 days

Dec 2, 2025

Begins

Dec 18, 2025

Discovered

Sep 1, 2026

Filed

This filing is one of 6 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Massachusetts State AGbd_552342ca92f193182026-09-01Candidate
Massachusetts State AGbd_f55f656ee8aa51412026-09-01Candidate
New Hampshire State AGbd_6f94ad8afcd0294b2026-09-11 · +10dVerified
Indiana State AGbd_e67d6baea475da3d2026-09-14 · +13dVerified

Show 1 more filing ↓up to 30d gap

Massachusetts State AGbd_e66b24c3665614af2026-10-01 · +30dVerified

Name: Graham County Hospital
norm: graham county hospital
Domain: aestohealth.com

Name: Graham County Hospital
norm: graham county hospital
Industry: Healthcarellm

Discovered: Dec 18, 2025
Breach occurred: Dec 2, 2025 – Dec 18, 2025
Undetected for: 16 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 1state-resident count only
Data types: PHIIdentity (basic)Health (basic)
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1078 Valid AccountsT1041 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 single-bureau credit monitoring and identity theft protection services
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 · 6 filings · 3 states

View merged incident ↗

Massachusetts State AGSep 1 · first

Massachusetts State AGSep 1 · first · this page

New Hampshire State AG+10d

Indiana State AG+13d

Massachusetts State AG+30d

Pattern: first filing Sep 1 (MA), last Oct 1 (MA) — a 30-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/2026-1662-little-river-memorial-hospital/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 1, 2026
Raw hash: 221e4aa5a59dc2dd4ca401ac8c9918846226fed267655f75c1240099202afe66

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityGraham County Hospital

Victim entityGraham County Hospital

Incidentdiscovered Dec 18, 2025

Stated responseCommenced a prompt and thorough investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov