HackingHealthcareTechnologyHealthcareData ExfiltratedCustomer Data InvolvedBusiness Associate (HIPAA)Downstream VictimsPHIIdentity (basic)Government IDFinancial accountHealth (basic)MediumContained

AESTO, LLC

bd_eac49aabb3a023ff · schema v1 · pii pii-v2

Severity

Medium

Discovered

Dec 18, 2025

Filed

Aug 21, 2026

To disclose

35 weeks

Affected

3state residents only

Linked

9 filings

Confidence

69%

Full breach record for AESTO, LLC →

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 accessed and copied protected health information (PHI) and personally identifiable information (PII), including names, medical record numbers, Social Security numbers, and financial account numbers, between December 2 and December 18, 2025. The incident was discovered on December 18, 2025. Approximately 3 New Hampshire residents were affected. Aesto engaged forensic specialists, contained the incident, and notified affected individuals and regulators.

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Incident timeline

undetected · 16 days

discovery → filing · 35 weeks / 246 days

Dec 2, 2025

Begins

Dec 18, 2025

Discovered

Aug 21, 2026

Filed

vs. sector median

+24 wks slower

This filing is one of 9 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (8) · sorted by filing gap

New Hampshire State AGbd_b5839d18101d09ca2026-08-21Verified
California State AGbd_65f70444b3fbe6f72026-08-24 · +3dVerified
New Hampshire State AGbd_4fe674ca1413cfc02026-08-27 · +6dVerified
New Hampshire State AGbd_64f64f39cb8a849a2026-08-28 · +7dVerified

Show 4 more filings ↓up to 21d gap

Massachusetts State AGbd_d39e08ca3ce7e1182026-09-01 · +11dVerified
Illinois State AGbd_49a6928816a82c852026-08-01 · +20dCandidate
Illinois State AGbd_a10ec3898d9326e02026-08-01 · +20dVerified
HHS OCRbd_6054557cd914ee672026-07-31 · +21dCandidate

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

Name: AESTO, LLC
norm: aesto
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 21, 2026
Affected individuals: 3state-resident count only
Data types: PHIIdentity (basic)Government IDFinancial accountHealth (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Filed notice with New Hampshire Office of Attorney General
Third party: via Aesto LLC

During the incident: Commenced an investigation into the full nature and scope of the incident
Worked closely with third-party forensic specialists
Contained the incident
Notified Covered Entity clients whose patient information was included in the files potentially accessed or acquired by the unauthorized party
Posted notice of this event on its website
Provided notice to major statewide media in New Hampshire
Began mailing notice letters to affected New Hampshire residents
Provided access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge
Changes made: Continually evaluates and modifies practices and internal controls to enhance the security and privacy of personal information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 35 weeks(246 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 9 filings · 5 states

View merged incident ↗

HHS OCRJul 31 · first

Illinois State AG+1d

New Hampshire State AG+21d

New Hampshire State AG+21d · this page

California State AG+24d

New Hampshire State AG+27d

New Hampshire State AG+28d

Massachusetts State AG+32d

Pattern: first filing Jul 31 (AL), last Sep 1 (MA) — a 32-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://mm.nh.gov/files/uploads/doj/remote-docs/surgeons-choice-medical-center-20260821.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 21, 2026
Raw hash: 6594776887d5503b7e6026fae7e7a1095c28f48c6b7fb6af693c506eb5bf4572

Linked disclosures

Regulatory filings (8) · sorted by filing gap

Reporting entityAesto LLC d/b/a Aesto Health

Victim entityAESTO, LLC

Incidentdiscovered Dec 18, 2025

Stated responseCommenced an investigation into the full nature and scope of the incident

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov