HackingEducationEducationStolen CredentialsCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Grumman Hill Montessori Association, Inc.

bd_424e1cac515cb6a3 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 1, 2024

Filed

Jul 24, 2025

To disclose

38 weeks

Affected

4state residents only

Linked

3 filings

Confidence

66%

Full breach record for Grumman Hill Montessori Association, Inc. →

Grumman Hill Montessori Association, Inc. (GHMA) notified the NH Attorney General of unauthorized access to personal information of approximately 4 New Hampshire residents. GHMA first learned of the suspicious activity on or about November 1, 2024, and confirmed access on June 25, 2025. Affected data included names, SSNs, and driver's license numbers. GHMA engaged forensic specialists, notified law enforcement, and provided 12 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

discovery → filing · 38 weeks / 265 days

Nov 1, 2024

Discovered

Jun 25, 2025

Scope determined

Jul 24, 2025

Filed

vs. sector median

+29 wks slower

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Maine State AGbd_814468149d33a31c2025-07-24Verified
Massachusetts State AGbd_ccc75d22069212b52025-07-24Verified

Name: Grumman Hill Montessori Association, Inc.
norm: grumman hill montessori

Name: Grumman Hill Montessori Association, Inc.
norm: grumman hill montessori
Also named: Grumman Hill Montessori Association, Inc.dba oflegal entity
Seven Acres Montessoridba oftrade name
Industry: Educationllm

Discovered: Nov 1, 2024
Materiality determined: Jun 25, 2025
Notification sent: Jul 24, 2025
Affected individuals: 4state-resident count only
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified federal law enforcement
Initial access: valid_credentials

During the incident: Engaged digital forensics specialists to assist with the investigation
Notified federal law enforcement
Implemented additional safeguards and training
Provided access to credit monitoring services for twelve (12) months through Transunion
Changes made: Implemented additional safeguards and training
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 38 weeks(265 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 ↗

Maine State AGJul 24 · first

Massachusetts State AGJul 24 · first

New Hampshire State AGJul 24 · 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/grumman-hill-montessori-seven-acres-20250724.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 24, 2025
Raw hash: a21e08ca495a089b6fc312913615948a658db0320ed8163023b3fe92c1103af6

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityGrumman Hill Montessori Association, Inc.

Victim entityGrumman Hill Montessori Association, Inc.

Incidentdiscovered Nov 1, 2024

Stated responseEngaged digital forensics specialists to assist with the investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov