HackingTransportation & LogisticsTransportationData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedTargetedAuthenticationCredentialsFinancial accountHealth (basic)Identity (basic)Government IDMinorPHIMediumResolved

Marten Transport

bd_8ad44bdc97b0f78b · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 3, 2021

Filed

Mar 25, 2022

To disclose

25 weeks

Affected

521state residents only

Linked

10 filings

Confidence

71%

Full breach record for Marten Transport →

Marten Transport, Ltd. reported a cybersecurity incident to Washington state authorities. An unknown actor gained unauthorized access to company systems between September 30 and October 4, 2021, viewing or downloading personal information. The breach affected 521 Washington residents, exposing names, SSNs, driver's license numbers, DOBs, passport numbers, health insurance info, medical info, financial account info, and credentials. Marten disconnected systems, engaged forensic specialists, notified law enforcement, and provided 1 year of credit monitoring via Equifax to affected individuals.

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Washington clock✗ WA AG >90d25 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

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
California State AGbd_75003077209ce0c22022-03-25Verified
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 25, 2022
Affected individuals: 521state-resident count only
Data types: Identity (basic)Government IDFinancial accountHealth (basic)CredentialsMinor
Data elements: NameSocial Security numberDriver's licence numberFinancial account numberDate of birthPassport numberHealth insurance IDMedical informationUsername + password
WA-stated cause: Cyberattack
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoing
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Notified federal law enforcementNotifying other appropriate state regulators

During the incident: Disconnected affected systems
Commenced an extensive investigation with the assistance of third-party computer forensic specialists
Promptly reported this event to federal law enforcement
Worked with third-party data specialists to conduct a comprehensive review of information stored on the impacted systems
Undertook a time-intensive manual review of its records to determine the identities and contact information for potentially impacted individuals
Provided preliminary notice of this event to potentially impacted employees
Offered complimentary credit monitoring services
Established a dedicated assistance line for affected individuals
Providing access to credit monitoring and identity restoration services for one (1) year, through Equifax
Changes made: Working to implement additional safeguards and training to its employees
Enhancing its 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: WA AG >90dLeak >30d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

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

California State AG+83d

Massachusetts State AG+83d

Indiana State AG+83d

Oregon State AG+83d

Maine State AG+83d

Washington 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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA6412.pdf
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: 480bf9ae9fb6f114ada265473064ed1b1686150efb1f565e559e51c7b40c89af

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

ComplianceWA AG >90d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com