HackingTechnologyProfessional ServicesInformationStolen CredentialsData ExfiltratedTargetedIdentity (basic)Government IDMediumContained

M.C. Dean, Inc.

bd_13de81227fda67cd · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 2, 2022

Filed

Sep 19, 2022

To disclose

16 weeks

Affected

18state residents only

Linked

7 filings

Confidence

66%

Full breach record for M.C. Dean, Inc. →

M.C. Dean, Inc. notified the NH AG of unauthorized access to its systems between Dec 24, 2021 and Jun 2, 2022. Discovered Jun 2, 2022. Affected 18 NH residents with names, SSNs, and driver's license numbers. Notified FBI/DHS/CISA/DoD. Offered 24 months credit monitoring.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 160 days

discovery → filing · 16 weeks / 109 days

Dec 24, 2021

Begins

Jun 2, 2022

Discovered

Sep 19, 2022

Filed

vs. sector median

3 wks faster

This filing is one of 7 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (6) · sorted by filing gap

Montana State AGbd_01e173680331a14d2022-09-14 · +5dCandidate
Maine State AGbd_04128297ca39bbfa2022-09-14 · +5dVerified by operator
California State AGbd_13e9eaa99e2685ea2022-09-14 · +5dVerified by operator
Massachusetts State AGbd_3f96f654f9e2f3362022-09-14 · +5dVerified

Show 2 more filings ↓up to 5d gap

Indiana State AGbd_6c093b6ab5c992692022-09-14 · +5dVerified
South Carolina State AGbd_fc506a5feae8fdb72022-09-14 · +5dVerified

Name: M.C. Dean, Inc.
norm: mc dean

Name: M.C. Dean, Inc.
norm: mc dean
Industry: TechnologyllmProfessional Servicesllm

Discovered: Jun 2, 2022
Breach occurred: Dec 24, 2021 – Jun 2, 2022
Undetected for: 160 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 14, 2022
Affected individuals: 18state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified the FBI, DHS/CISA and DoD
Initial access: valid_credentials

During the incident: Promptly took steps to secure its systems
With the assistance of third-party cybersecurity specialists, conducted an investigation
Notified the FBI, DHS/CISA and DoD
Continues to cooperate fully with federal law enforcement
Providing access to credit monitoring services for twenty-four (24) months, through Equifax
Providing impacted individuals with guidance on how to better protect against identity theft and fraud
Changes made: Implemented additional technical security measures designed to mitigate recurrence of this type of incident
Reviewing and enhancing existing data privacy policies and procedures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 16 weeks(109 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 7 filings · 7 states

View merged incident ↗

Montana State AGSep 14 · first

Maine State AGSep 14 · first

California State AGSep 14 · first

Massachusetts State AGSep 14 · first

Indiana State AGSep 14 · first

South Carolina State AGSep 14 · first

New Hampshire State AG+5d · this page

Pattern: first filing Sep 14 (MT), last Sep 19 (NH) — a 5-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/m-c-dean-20220919.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 19, 2022
Raw hash: fafa580ce56b54c12cd2772aa0ae096e80ab5dc4886d5e762ec372829c8ee332

Linked disclosures

Regulatory filings (6) · sorted by filing gap

Reporting entityM.C. Dean, Inc.

Victim entityM.C. Dean, Inc.

Incidentdiscovered Jun 2, 2022

Stated responsePromptly took steps to secure its systems

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov