PhysicalEnergy & UtilitiesUtilitiesLossCustomer Data InvolvedIdentity (basic)Government IDMediumResolved

MDU Resources Group, Inc.

bd_d884c34c85b0b2b4 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Jul 22, 2019

To disclose

—

Affected

3state residents only

Confidence

65%

Full breach record for MDU Resources Group, Inc. →

MDU Resources Group, Inc. reported the loss of an unencrypted company-owned desktop computer in shipping on April 23, 2019. The device contained personal information including names, addresses, SSNs, and dates of birth for individuals who applied for life insurance through The Hartford. No access was confirmed.

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Incident timeline

Apr 23, 2019

Begins

Jul 22, 2019

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed3 affectedView incident

Name: MDU Resources Group, Inc.
norm: mdu resources
Domain: mdu.com

Name: MDU Resources Group, Inc.
norm: mdu resources
Domain: mdu.com
Industry: Energy & Utilitiesllm

Discovered: —
Breach occurred: Apr 23, 2019
Materiality determined: —
Notification sent: Jul 22, 2019
Affected individuals: 3state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unknown
MITRE ATT&CK: T1052 Exfiltration Over Physical Medium
Regulator citations: Notified Montana Office of the Attorney General

During the incident: Notified affected individuals
Notified Montana Office of the Attorney General
Changes made: Corrected potential exposure
Ensured incident does not reoccur
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://dojmt.gov/wp-content/uploads/OCP/Data-Breach-NotificationDetails16.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 22, 2019
Raw hash: cf68ad118593b604e8ab60125dd28e581a7b197f70c6a3dd6b4b16489ee53509

Reporting entityMDU Resources Group, Inc.

Victim entityMDU Resources Group, Inc.

IncidentUnknown

Stated responseNotified affected individuals

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov