HackingHealthcareTechnologyHealthcareData ExfiltratedCustomer Data InvolvedSupply Chain (3P Vendor)Government IDIdentity (basic)Health (basic)MediumContained

Aesto Health

bd_7148309868a16c34 · schema v1 · pii pii-v2

Severity

Medium

Discovered

May 26, 2026

Filed

Sep 25, 2026

To disclose

17 weeks

Affected

25state residents only

Linked

12 filings

Confidence

70%

Full breach record for Aesto Health →2 incidents on file

Aesto, LLC, a healthcare data migration provider, notified the NH AG of a data event affecting 25 NH residents. Unauthorized access to AWS infrastructure occurred between Dec 2-18, 2025. Aesto confirmed the breach on May 26, 2026, after forensic review. Names and SSNs were potentially accessed. Notices were mailed on Sept 4, 2026, offering 12 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 175 days

discovery → filing · 17 weeks / 122 days

Dec 2, 2025

Begins

May 26, 2026

Discovered

Sep 25, 2026

Filed

vs. sector median

+8 wks slower

This filing is one of 12 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Vermont State AGbd_8145059268bb2d362026-09-25Verified
California State AGbd_b3f56c134cd959942026-10-01 · +6dVerified
Massachusetts State AGbd_a7593a37841d8ff02026-09-01 · +24dVerified
Massachusetts State AGbd_b1d347b681553e3a2026-09-01 · +24dVerified

Show 6 more filings ↓up to 56d gap

California State AGbd_65f70444b3fbe6f72026-08-24 · +32dVerified
Oregon State AGbd_ffdc3411341bf72d2026-08-05 · +51dVerified
Washington State AGbd_6ba6b179ea4373bf2026-08-04 · +52dVerified
Illinois State AGbd_49a6928816a82c852026-08-01 · +55dVerified
Illinois State AGbd_a10ec3898d9326e02026-08-01 · +55dVerified
HHS OCRbd_6054557cd914ee672026-07-31 · +56dCandidate

Showing first 10 of 11 linked disclosures.

Name: MCDONALD HOPKINS LLC
norm: mcdonald hopkins

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

Discovered: May 26, 2026
Breach occurred: Dec 2, 2025 – Dec 18, 2025
Undetected for: 175 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 4, 2026
Affected individuals: 25state-resident count only
Data types: Government IDIdentity (basic)Health (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: Notified the U.S. Department of Health and Human Services pursuant to the Health Insurance Portability and Accountability Act (HIPAA)
Initial access: exploit_public_facing

During the incident: Worked with external cybersecurity professionals to complete a forensic investigation
Notified the third-party customer about the incident
Notified the U.S. Department of Health and Human Services pursuant to the Health Insurance Portability and Accountability Act (HIPAA)
Mailed written notice of this incident to approximately twenty-five (25) New Hampshire residents
Changes made: Providing access to credit monitoring services for 12 months, through TransUnion, at no cost
Mailed guidance on how to better protect against identity theft and fraud
Provided information on how to place a fraud alert and security freeze on one's credit file
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 weeks(122 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 8 states

View merged incident ↗

HHS OCRJul 31 · first

Illinois State AG+1d

Washington State AG+4d

Oregon State AG+5d

California State AG+24d

Massachusetts State AG+32d

Vermont State AG+56d

New Hampshire State AG+56d · this page

California State AG+62d

Pattern: first filing Jul 31 (AL), last Oct 1 (CA) — a 62-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 11 — the full spread may be wider.

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/aesto-20260925.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 25, 2026
Raw hash: a5989cd9c10493fde3995d78a7ea2e4ef9485ab158ed285b48d29e2b279a2701

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityMCDONALD HOPKINS LLC

Victim entityAesto Health

Incidentdiscovered May 26, 2026

Stated responseWorked with external cybersecurity professionals to complete a forensic investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov