Social EngineeringManufacturingConstructionManufacturingPhishingStolen CredentialsTargetedIdentity (basic)PIILowContained

Diversified Materials & Construction, LLC

bd_e26176fdc91e4c7f · schema v1 · pii pii-v1

Severity

Low

Discovered

Jan 30, 2024

Filed

May 13, 2024

To disclose

15 weeks

Affected

148state residents only

Confidence

66%

Full breach record for Diversified Materials & Construction, LLC →

Diversified Materials & Construction, LLC notified Montana residents of an email compromise discovered on Jan 30, 2024. An unknown third party gained unauthorized access to an employee email account via phishing. The incident may have exposed names and other personal information. The company engaged forensic consultants and is offering 12 months of Experian IdentityWorks services.

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Incident timeline

discovery → filing · 15 weeks / 104 days

Jan 30, 2024

Discovered

May 13, 2024

Filed

vs. sector median

+4 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed148 affectedView incident

Name: Diversified Materials & Construction, LLC
norm: diversified materials construction

Name: Diversified Materials & Construction, LLC
norm: diversified materials construction
Industry: ManufacturingllmConstructionllm

Discovered: Jan 30, 2024
Materiality determined: —
Notification sent: May 13, 2024
Affected individuals: 148state-resident count only
Data types: Identity (basic)PII
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: External
Initial access: phishing_link

During the incident: Engaged forensic consultants to investigate the root of incident
Secured its systems
Conducted a thorough review of the contents of the files
Offering 12 months of complimentary credit monitoring through Experian IdentityWorks
Changes made: Screening e-mails carefully to avoid a similar incident in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 weeks(104 days from discovery to filing)
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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-1360.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 13, 2024
Raw hash: e6f2d2880548cf3d65fef033fd1ce3867dfaf976e2f38588854a426f42c957bd

Reporting entityDiversified Materials & Construction, LLC

Victim entityDiversified Materials & Construction, LLC

Incidentdiscovered Jan 30, 2024

Stated responseEngaged forensic consultants to investigate the root of incident

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov