HackingHealthcareTechnologyHealthcareData ExfiltratedCustomer Data InvolvedBusiness Associate (HIPAA)Delayed DiscoveryPHIIdentity (basic)Government IDFinancial accountHealth (basic)MediumContained

Aesto Health

bd_1e1311a19a8d836a · schema v1 · pii pii-v2

Severity

Medium

Discovered

Dec 18, 2025

Filed

Aug 10, 2026

To disclose

34 weeks

Affected

1state residents only

Linked

2 filings

Confidence

66%

Full breach record for Aesto Health →6 incidents on file

Aesto LLC d/b/a Aesto Health, a healthcare data migration and archiving service provider, experienced a network security incident impacting its AWS infrastructure. An unauthorized actor copied protected health information, including names, SSNs, and medical data, between December 2 and December 18, 2025. The incident was discovered on December 18, 2025. One New Hampshire resident was affected. Aesto engaged forensic experts, contained the incident, and notified clients. Credit monitoring services were offered to affected individuals.

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Incident timeline

undetected · 16 days

discovery → filing · 34 weeks / 235 days

Dec 2, 2025

Begins

Dec 18, 2025

Discovered

Aug 10, 2026

Filed

vs. sector median

+23 wks slower

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

New Hampshire State AGbd_b5161dd8223d8ca92026-08-12 · +2dCandidate

Name: Aesto LLC d/b/a Aesto Health
norm: aesto health
Domain: chc1.com

Name: Aesto Health
norm: aesto health
Domain: aestohealth.com
Also named: Aesto LLCdba oflegal entity
Aesto Healthdba oftrade name
Industry: HealthcarellmTechnologyllm

Discovered: Dec 18, 2025
Breach occurred: Dec 2, 2025 – Dec 18, 2025
Undetected for: 16 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 10, 2026
Affected individuals: 1state-resident count only
Data types: PHIIdentity (basic)Government IDFinancial accountHealth (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Notified New Hampshire Attorney General
Third party: via Aesto LLC d/b/a Aesto Health

During the incident: Commenced a prompt and thorough investigation
Worked very closely with external cybersecurity professionals experienced in handling these types of incidents
Contained the incident
Notified Covered Entity clients whose patient information was included in the files potentially accessed or acquired by the unauthorized party
Set up a dedicated and confidential toll-free response line to respond to questions
Changes made: Continually evaluates and modifies its practices and internal controls to enhance the security and privacy of personal information
Offering complimentary Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 34 weeks(235 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings

View merged incident ↗

New Hampshire State AGAug 10 · first · this page

New Hampshire State AG+2d

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://mm.nh.gov/files/uploads/doj/remote-docs/midtown-community-health-center-20260810.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 10, 2026
Raw hash: ea572ccb4d3356b2f798ce4209bc6c8124f95007b747f0229e5cad605eaae290

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityAesto LLC d/b/a Aesto Health

Victim entityAesto Health

Incidentdiscovered Dec 18, 2025

Stated responseCommenced a prompt and thorough investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov