HackingEnergy & UtilitiesUtilitiesData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

JACO OIL COMPANY

bd_e0c07d84b6f98937 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 26, 2023

Filed

May 17, 2023

To disclose

7 weeks

Affected

Not disclosed

Linked

5 filings

Confidence

64%

Full breach record for JACO OIL COMPANY →

Jaco Oil Company notified the California Attorney General of a data breach where unauthorized parties copied files containing personal information (names, addresses, SSNs, bank account info, driver's license/passport numbers) from its network on March 25, 2023. The company discovered suspicious activity on March 26, 2023. Affected individuals are offered 12 months of credit monitoring and identity restoration services.

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California clockDiscovered Mar 26, 2023 → Notified May 17, 202352d ✓ CA 60-day OK7 weeks discovery → filing

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

Montana State AGbd_6fa723ec66f8168c2023-05-17Candidate
Indiana State AGbd_827842331d3a0d6c2023-05-17Verified
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 – Mar 26, 2023
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: May 17, 2023
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unknown
MITRE ATT&CK: T1041 Exfiltration Over C2 Channel
Threat actor: External

During the incident: Began an investigation with the assistance of third-party forensic specialists
Assessed the security of our systems
Notified potentially affected individuals
Offering 12 months of complimentary credit monitoring, cyber scanning, identity theft insurance, and identity restoration services through IDX
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: CA 60-day OK · 52d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Mar 26, 2023
→ Notified: May 17, 2023
52d 60 days (analyst band, pre-2026 discoveries) CA 60-day OK

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Mar 26, 2023 → Notified: May 17, 2023	52d	60 days (analyst band, pre-2026 discoveries)	CA 60-day OK

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 3 states

View merged incident ↗

Montana State AGMay 17 · first

Indiana State AGMay 17 · first

California State AGMay 17 · first · this page

California State AG+107d

Pattern: first filing May 17 (MT), 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://oag.ca.gov/ecrime/databreach/reports/sb24-566836
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: 19563d1ee2cdd869101dd30ce8052bae9a0bbb60c4a37f208050755a1332d76a

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

ComplianceCA 60-day OK

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov