HackingHealthcareHealthcareData ExfiltratedCustomer Data InvolvedDelayed DiscoveryPHIIdentity (basic)Government IDFinancial accountHealth (basic)HighContained

Heywood Healthcare Inc.

bd_e281f07e626473f7 · schema v1 · pii pii-v2

Severity

High

Discovered

Oct 12, 2025

Filed

Sep 10, 2026

To disclose

48 weeks

Affected

7,087state residents only

Linked

2 filings

Confidence

70%

Full breach record for Heywood Healthcare Inc. →2 incidents on file

Heywood Healthcare Inc. notified the NH Attorney General of an incident where an unknown third party accessed its network between Oct 8-12, 2025, and acquired files containing personal information of 7,087 NH residents. Data included names, DOB, driver's license numbers, financial account numbers, health insurance info, medical info, passport numbers, and SSNs. Discovery occurred on Oct 12, 2025. Notifications were sent on Sept 10, 2026, including credit monitoring offers.

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Incident timeline

undetected · 4 days

discovery → filing · 48 weeks / 333 days

Oct 8, 2025

Begins

Oct 12, 2025

Discovered

Sep 10, 2026

Filed

vs. sector median

+35 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

Vermont State AGbd_0a6ef0d10098a1272026-09-10Candidate

Name: Pasha A. Sternberg (on behalf of Heywood Healthcare Inc.)
norm: pasha a sternberg on behalf of heywood healthcare

Name: Heywood Healthcare Inc.
norm: heywood healthcare
Industry: Healthcarellm

Discovered: Oct 12, 2025
Breach occurred: Oct 8, 2025 – Oct 12, 2025
Undetected for: 4 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 10, 2026
Affected individuals: 7,087state-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: Notified the Attorney General of the State of New Hampshire

During the incident: Took steps to contain its network
Engaged an outside third-party forensic expert to investigate the issue
Notified law enforcement
Mailing notification letters to individuals via USPS
Arranged for a toll-free, dedicated call line to assist in responding to inquiries
Changes made: Reviewing its technical security measures
Further enhancing its technical security measures
Offered complimentary credit monitoring services
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 48 weeks(333 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 · 2 states

View merged incident ↗

Vermont State AGSep 10 · first

New Hampshire State AGSep 10 · first · this page

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/heywood-healthcare-20260910.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 10, 2026
Raw hash: 236ff47e39f0293ec9c827f72c59567ba18909f9470f4b0c24ed15c0edcac135

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityPasha A. Sternberg (on behalf of Heywood Healthcare Inc.)

Victim entityHeywood Healthcare Inc.

Incidentdiscovered Oct 12, 2025

Stated responseTook steps to contain its network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov