HackingTechnologyInformationData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDMediumContained

GTC Control Solutions, Inc.

bd_d919e8e0f43cfea5 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 29, 2024

Filed

Nov 13, 2025

To disclose

20 months

Affected

1state residents only

Linked

2 filings

Confidence

66%

Full breach record for GTC Control Solutions, Inc. →

GTC Control Solutions, Inc. notified the New Hampshire Attorney General of a data event affecting one NH resident. Unauthorized access occurred between Feb 23 and Mar 29, 2024, resulting in the download of personal information (name, address, SSN). GTC engaged cybersecurity specialists, conducted third-party and internal reviews, and provided 24 months of credit monitoring via IDX. Notification to the resident began Nov 7, 2025.

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Incident timeline

undetected · 35 days

discovery → filing · 20 months / 594 days

Feb 23, 2024

Begins

Mar 29, 2024

Discovered

Nov 13, 2025

Filed

vs. sector median

+66 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

Massachusetts State AGbd_6b714ca5bd4d9db12025-11-13Candidate

Name: Mullen Coughlin LLC
norm: mullen coughlin

Name: GTC Control Solutions, Inc.
norm: gtc control
Industry: Technologyllm

Discovered: Mar 29, 2024
Breach occurred: Feb 23, 2024 – Mar 29, 2024
Undetected for: 35 daysoccurrence → discovery
Materiality determined: —
Notification sent: Nov 7, 2025
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1119 Automated Collection
Threat actor: External

During the incident: Launched a comprehensive investigation with the assistance of cybersecurity specialists
Performed a time-intensive third-party review of the potentially impacted files
Undertook a detailed internal review of its records to identify contact information
Providing access to credit monitoring and identity restoration services for twenty-four (24) months, through IDX
Established a toll-free assistance line
Changes made: Implement additional technical controls and administrative safeguards
Provide cybersecurity training to its employees
Evaluating our technical and administrative safeguards
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 20 months(594 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 AGNov 13 · first

New Hampshire State AGNov 13 · 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/gtc-control-solutions-20251113.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 13, 2025
Raw hash: 5bc77520b22cb2f97cbc6cf25ca3db384d288820cdc12b5d98ea6c794f091f01

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityMullen Coughlin LLC

Victim entityGTC Control Solutions, Inc.

Incidentdiscovered Mar 29, 2024

Stated responseLaunched a comprehensive investigation with the assistance of cybersecurity specialists

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov