HackingEnergy & UtilitiesUtilitiesStolen CredentialsCapture Stored DataData ExfiltratedTargetedIdentity (basic)Government IDFinancial accountMediumActive

JACO OIL COMPANY

bd_6fa723ec66f8168c · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 26, 2023

Filed

May 17, 2023

To disclose

7 weeks

Affected

2state residents only

Linked

5 filings

Confidence

65%

Full breach record for JACO OIL COMPANY →

Jaco Oil Company notified Montana residents of unauthorized access to its computer network on or about March 25, 2023, discovered on March 26, 2023. Files containing names, addresses, SSNs, and bank account information were copied without authorization. The company engaged forensic specialists and is offering 12 months of credit monitoring and identity restoration services.

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Incident timeline

undetected · 1 days

discovery → filing · 7 weeks / 52 days

Mar 25, 2023

Begins

Mar 26, 2023

Discovered

May 17, 2023

Filed

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitelockbit_3bd_f2ba70c8d299b0412023-04-19 · +28dVerified by operator

Regulatory filings (3) · sorted by filing gap

Indiana State AGbd_827842331d3a0d6c2023-05-17Verified
California State AGbd_e0c07d84b6f989372023-05-17Verified
California State AGbd_31ba0f4fc1f158532023-09-01 · +107dVerified by operator

Name: JACO OIL COMPANY
norm: jaco oil
Domain: jaco.com

Name: JACO OIL COMPANY
norm: jaco oil
Domain: jaco.com
Industry: Energy & Utilitiesllm

Discovered: Mar 26, 2023
Breach occurred: Mar 25, 2023
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: May 17, 2023
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Initial access: valid_credentials

During the incident: Began an investigation, with the assistance of third-party forensic specialists
Undertook a review of the files to determine their contents and to whom they were related
Offering you access to 12 months of complimentary credit monitoring, cyber scanning, identity theft insurance, and identity restoration services through IDX, A ZeroFox Company
Changes made: Reviewing and enhancing our information security policies and procedures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(52 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 3 states

View merged incident ↗

Indiana State AGMay 17 · first

California State AGMay 17 · first

Montana State AGMay 17 · first · this page

California State AG+107d

Pattern: first filing May 17 (IN), last Sep 1 (CA) — a 107-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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-292.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 17, 2023
Raw hash: 1e96cf431af7504f58e6c5d835fd6d514df3754a4d8672aef69b22c890f9aec0

Linked disclosures

Ransomware claims (1)

Regulatory filings (3) · sorted by filing gap

Reporting entityJACO OIL COMPANY

Victim entityJACO OIL COMPANY

Incidentdiscovered Mar 26, 2023

Stated responseBegan an investigation, with the assistance of third-party forensic specialists

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov