Social EngineeringEnergy & UtilitiesUtilitiesPhishingStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountPHIMediumContained

Armstrong Oil & Gas, Inc.

bd_8954c2cc8b39cb50 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 11, 2019

Filed

May 1, 2020

To disclose

20 weeks

Affected

1state residents only

Confidence

66%

Full breach record for Armstrong Oil & Gas, Inc. →

Armstrong Oil & Gas, Inc. notified Montana residents of a December 2019 email compromise. Unauthorized access to employee accounts exposed names, addresses, government IDs, financial data, and PHI. The company engaged forensic investigators, secured accounts, and offered 12 months of credit monitoring via ID Experts.

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Incident timeline

discovery → filing · 20 weeks / 142 days

Dec 11, 2019

Discovered

May 1, 2020

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1 affectedView incident

Name: Armstrong Oil & Gas, Inc.
norm: armstrong oil gas

Name: Armstrong Oil & Gas, Inc.
norm: armstrong oil gas
Industry: Energy & Utilitiesllm

Discovered: Dec 11, 2019
Materiality determined: —
Notification sent: May 1, 2020
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government IDFinancial accountPHI
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Took steps to secure all Armstrong email accounts
Launched an investigation
Engaged an independent digital forensics firm
Engaged an independent document review vendor
Enhanced the security of our email system
Offering identity theft protection services through ID Experts
Changes made: Enhanced the security of our email system
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 20 weeks(142 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/Breach-NotificationDetails-164.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 1, 2020
Raw hash: 399781ea627f57800e1df98b64158cce8a8161101637a224cb711d730bdc9bd5

Reporting entityArmstrong Oil & Gas, Inc.

Victim entityArmstrong Oil & Gas, Inc.

Incidentdiscovered Dec 11, 2019

Stated responseTook steps to secure all Armstrong email accounts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov