HackingTransportation & LogisticsTransportationData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDMinorMediumResolved

Marten Transport

bd_75003077209ce0c2 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 3, 2021

Filed

Mar 25, 2022

To disclose

25 weeks

Affected

Not disclosed

Linked

10 filings

Confidence

64%

Full breach record for Marten Transport →

Marten Transport, Ltd. notified individuals that an unknown actor gained unauthorized access to company systems between September 30 and October 4, 2021. The actor viewed or downloaded information including names, Social Security numbers, and dates of birth. The incident was discovered on October 3, 2021. Marten engaged forensic investigators, notified law enforcement, and is offering credit monitoring services. The investigation is complete.

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California clockDiscovered Oct 3, 2021 → Notified Mar 8, 2022156d ✗ CA 60-day late25 weeks discovery → filing

Incident timeline

undetected · 3 days

discovery → filing · 25 weeks / 173 days

Sep 30, 2021

Begins

Oct 3, 2021

Discovered

Mar 25, 2022

Filed

This filing is one of 10 about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Sitehivebd_e0f4910c3b69bea62022-01-25 · +59dVerified by operator

Regulatory filings (8) · sorted by filing gap

Montana State AGbd_0f5a485357deeba52022-03-25Verified
Washington State AGbd_8ad44bdc97b0f78b2022-03-25Verified
Massachusetts State AGbd_c8b7505cb8505f6f2022-03-25Verified
Indiana State AGbd_d31a4b317eb02d922022-03-25Verified

Show 4 more filings ↓up to 83d gap

Oregon State AGbd_d7f0daa4522142ac2022-03-25Verified
Maine State AGbd_ea74d9258957437f2022-03-25Verified
New Hampshire State AGbd_aee529f81d55bd0c2022-03-29 · +4dVerified
Illinois State AGbd_8f8b49fd24b30c1f2022-01-01 · +83dCandidate

Name: Marten Transport
norm: marten transport

Name: Marten Transport
norm: marten transport
Industry: Transportation & Logisticsllm

Discovered: Oct 3, 2021
Breach occurred: Sep 30, 2021 – Oct 4, 2021
Undetected for: 3 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 8, 2022
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDMinor
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Reported to federal law enforcement

During the incident: Disconnected affected systems
Commenced an extensive investigation
Reported this event to federal law enforcement
Worked with data specialists to conduct a comprehensive review
Conducted a time-intensive manual review of records
Offering complimentary access to credit monitoring and identity restoration services through Equifax
Changes made: Enhancing information security posture through additional administrative and technical measures
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 25 weeks(173 days from discovery to filing)
Compliance flags: CA 60-day late · 156dLeak >30d
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: Oct 3, 2021
→ Notified: Mar 8, 2022
156d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Oct 3, 2021 → Notified: Mar 8, 2022	156d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 9 filings · 9 states

View merged incident ↗

Illinois State AGJan 1 · first

Montana State AG+83d

Washington State AG+83d

Massachusetts State AG+83d

Indiana State AG+83d

Oregon State AG+83d

Maine State AG+83d

California State AG+83d · this page

New Hampshire State AG+87d

Pattern: first filing Jan 1 (IL), last Mar 29 (NH) — a 87-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/sb24-551995
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 25, 2022
Raw hash: 6da99a844410b3e8e18ce934c2ddd9d2957a14fd24dd119ae29ff6db8fb38cd3

Linked disclosures

Ransomware claims (1)

Regulatory filings (8) · sorted by filing gap

Reporting entityMarten Transport

Victim entityMarten Transport

Incidentdiscovered Oct 3, 2021

Stated responseDisconnected affected systems

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov