HackingHealthcareTechnologyHealthcareStolen CredentialsData ExfiltratedData EncryptedCustomer Data InvolvedSupply Chain (3P Vendor)PHIHealth (basic)Government IDIdentity (basic)MediumContained

Health Access Network Inc.

bd_940a9250b897f717 · schema v1 · pii pii-v2

Severity

Medium

Discovered

Jul 7, 2026

Filed

Sep 23, 2026

To disclose

11 weeks

Affected

153state residents only

Linked

3 filings

Confidence

69%

Full breach record for Health Access Network Inc. →

Health Access Network, Inc. reported a data security incident involving its business associate, Aesto, LLC. Aesto experienced unauthorized access to its AWS infrastructure between December 2 and December 18, 2025. The incident potentially exposed protected health information and Social Security numbers of 153 New Hampshire residents. Health Access Network notified the New Hampshire Attorney General on September 23, 2026, and residents were notified via mail on September 17, 2026. Identity theft protection services were offered.

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Incident timeline

undetected · 217 days

discovery → filing · 11 weeks / 78 days

Dec 2, 2025

Begins

Jul 7, 2026

Discovered

Sep 23, 2026

Filed

vs. sector median

+2 wks slower

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

Vermont State AGbd_2316face105e9c102026-09-23Candidate
Massachusetts State AGbd_5a98013103ed07b32026-09-01 · +22dVerified

Name: Health Access Network Inc.
norm: health access network

Name: Health Access Network Inc.
norm: health access network
Industry: HealthcarellmTechnologyllm

Discovered: Jul 7, 2026
Breach occurred: Dec 2, 2025 – Dec 18, 2025
Undetected for: 217 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 17, 2026
Affected individuals: 153state-resident count only
Data types: PHIHealth (basic)Government IDIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: External
Regulator citations: Notified New Hampshire Attorney General pursuant to N.H. REV. STAT. ANN. § 359-C:20(I)(b)
Third party: via Aesto, LLC
Initial access: exploit_public_facing

During the incident: Engaged GuidePoint Security to perform Incident Response services
Contained the incident
Remediated the affected environment
Reset or rotated affected credentials
Enhanced monitoring
Implemented additional measures designed to prevent similar activity
Closed the security gaps exploited by the threat actor
Deleted the impacted Lambda functions
Rotated all impacted AWS secrets
Deleted unauthorized files uploaded by the threat actor
Changes made: Implemented additional measures designed to prevent similar activity
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
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 11 weeks(78 days from discovery to filing)
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 AGSep 1 · first

Vermont State AG+22d

New Hampshire State AG+22d · this page

Pattern: first filing Sep 1 (MA), last Sep 23 (NH) — a 22-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/health-access-network-20260923.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 23, 2026
Raw hash: 7550ce35f69f0920cf1697e6e770eb2e3b1f381f903dd92752ff37d31c5ac851

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityHealth Access Network Inc.

Victim entityHealth Access Network Inc.

Incidentdiscovered Jul 7, 2026

Stated responseEngaged GuidePoint Security to perform Incident Response services

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov