HackingTechnologyInformationStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Financial accountLowContained

Microforum Services Group

bd_36ce44b069df2ee3 · schema v1 · pii pii-v1

Severity

Low

Discovered

Dec 22, 2025

Filed

Apr 21, 2026

To disclose

17 weeks

Affected

1state residents only

Linked

2 filings

Confidence

66%

Full breach record for Microforum Services Group →

Microforum Services Group notified the New Hampshire Attorney General of a data event occurring between December 18 and 22, 2025, discovered on December 22, 2025. The incident involved unauthorized copying of customer name, contact, and credit card information. One New Hampshire resident was affected. Microforum engaged forensic specialists, retained counsel, and provided 24 months of credit monitoring via TransUnion. Notification letters were mailed on April 21, 2026.

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Incident timeline

undetected · 4 days

discovery → filing · 17 weeks / 120 days

Dec 18, 2025

Begins

Dec 22, 2025

Discovered

Apr 21, 2026

Filed

vs. sector median

2 wks faster

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

Massachusetts State AGbd_7e9065a3791f3e4b2026-04-21Verified

Name: Wilson, Elser, Moskowitz, Edelman & Dicker LLP
norm: wilson elser moskowitz edelman dicker
Domain: wilsonelser.com

Name: Microforum Services Group
norm: microforum services
Industry: Technologyllm

Discovered: Dec 22, 2025
Breach occurred: Dec 18, 2025 – Dec 22, 2025
Undetected for: 4 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 21, 2026
Affected individuals: 1state-resident count only
Data types: Identity (basic)Financial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Attorney General Consumer Protection Bureau
Initial access: valid_credentials

During the incident: Engaged a specialized cybersecurity firm to conduct a forensic investigation
Retained legal counsel
Notified its law firm
Began identifying the affected individuals in preparation for notice
Mailed notification letters on April 21, 2026
Changes made: Offered at least 24 months of complimentary credit monitoring and identity theft restoration services through TransUnion
Provided guidance on how to better protect against identity theft and fraud
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 weeks(120 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 ↗

Massachusetts State AGApr 21 · first

New Hampshire State AGApr 21 · 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/microforum-services-group-20260421.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 21, 2026
Raw hash: f0901437f9fe46ad29907af6f30adcaa7ad1e7a3a1f1d5ecc728215e2a000db8

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityWilson, Elser, Moskowitz, Edelman & Dicker LLP

Victim entityMicroforum Services Group

Incidentdiscovered Dec 22, 2025

Stated responseEngaged a specialized cybersecurity firm to conduct a forensic investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov