UnknownConstructionConstructionCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

MCM Construction

bd_d58d8d9ff931e8b6 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

May 14, 2021

To disclose

—

Affected

Not disclosed

Confidence

65%

Full breach record for MCM Construction →2 incidents on file

M Bar C Construction reported unauthorized access to its network between July 9, 2020, and October 2, 2020. The incident potentially exposed full names, Social Security numbers, driver's license numbers, and bank account information. The company engaged outside cybersecurity professionals for investigation and offered one year of complimentary identity monitoring through Kroll.

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Incident timeline

Jul 9, 2020

Begins

May 14, 2021

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: MCM Construction
norm: mcm construction
Domain: mcmconstructioninc.com

Name: MCM Construction
norm: mcm construction
Domain: mcmconstructioninc.com
Industry: Constructionllm

Discovered: —
Breach occurred: Jul 9, 2020 – Oct 2, 2020
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial account
Attack vector: Unknown

During the incident: Launched an investigation in consultation with outside cybersecurity professionals
Secured the services of Kroll to provide identity monitoring at no cost to you for one year
Set up a dedicated and confidential toll-free response line
Changes made: Continually evaluate and modify our practices and internal controls to enhance the security and privacy of your personal information
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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://oag.ca.gov/ecrime/databreach/reports/sb24-540902
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 14, 2021
Raw hash: a2f6f5ce39dc12f4d884467db85915777f5a82c02d00de22a296dc81d5556494

Reporting entityMCM Construction

Victim entityMCM Construction

IncidentUnknown

Stated responseLaunched an investigation in consultation with outside cybersecurity professionals

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov