HackingHealthcareHealthcareStolen CredentialsData ExfiltratedBusiness Associate (HIPAA)Customer Data InvolvedDelayed DiscoveryPHIHealth (basic)Identity (basic)Government IDFinancial accountMediumContained

Henry County Hospital

bd_0407cabc8a3c67e6 · schema v1 · pii pii-v2

Severity

Medium

Discovered

Dec 18, 2025

Filed

Oct 1, 2026

To disclose

—

Affected

Not disclosed

Linked

3 filings

Confidence

68%

Full breach record for Henry County Hospital →2 incidents on file

Aesto, LLC, a healthcare data migration and archiving service provider, experienced a cyber incident affecting its AWS infrastructure. Unauthorized access occurred between December 2 and December 18, 2025, and was discovered on December 18, 2025. Protected health information (PHI) of individuals affiliated with Henry County Hospital and other covered entities may have been accessed or acquired. The data included names, dates of birth, medical information, driver's license numbers, financial account numbers, health insurance information, ITINs, and Social Security numbers. Aesto engaged external cybersecurity professionals, secured the network, reset credentials, and deleted impacted Lambda functions. No evidence of misuse was found. Aesto is offering credit monitoring and notification assistance to affected covered entities.

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Incident timeline

undetected · 16 days

Dec 2, 2025

Begins

Dec 18, 2025

Discovered

Oct 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_b9572f43dc105eb02026-10-20 · +19dCandidate
Texas State AGbd_bb23c29304884cb62026-10-28 · +27dVerified

Name: Aesto Health
norm: aesto health
Domain: aestohealth.com

Name: Henry County Hospital
norm: henry 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: Jun 26, 2026
Affected individuals: Not disclosed
Data types: PHIHealth (basic)Identity (basic)Government IDFinancial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Offering to notify HHS OCR on behalf of covered entities if they opt-in
Third party: via Aesto, LLC

During the incident: Launched a thorough investigation with experienced external cybersecurity professionals
Worked with cybersecurity professionals to secure our network
Reset credentials
Enhanced our security measures and monitoring tools
Reviewing our existing policies and training protocols
Providing an attestation from our cybersecurity professionals detailing the root cause of the incident
Closed the security gaps exploited by the threat actor to gain access to the network
Deleted the impacted Lambda functions
Rotated all impacted AWS secrets
Deleted unauthorized files uploaded by the threat actor
Changes made: Enhanced our security measures and monitoring tools
Reviewing our existing policies and training protocols
Harden our network security
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 AGOct 1 · first · this page

New Hampshire State AG+19d

Texas State AG+27d

Pattern: first filing Oct 1 (MA), last Oct 28 (TX) — a 27-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/2026-1845-henry-county-hospital/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 1, 2026
Raw hash: 70c7db09b24c3add95a710b74958ff38f3b7c8b26f5167e676984aa6eba6c543

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityAesto Health

Victim entityHenry County Hospital

Incidentdiscovered Dec 18, 2025

Stated responseLaunched a thorough investigation with experienced external cybersecurity professionals

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov