PhysicalTransportation & LogisticsTransportationTheftCustomer Data InvolvedDelayed DiscoveryFinancial accountHealth (basic)Identity (basic)Government IDPHIHighActive

Horizon Lines

bd_c470f6011b8cc27c · schema v1 · pii pii-v1

Severity

High

Discovered

Dec 7, 2015

Filed

Dec 23, 2015

To disclose

16 days

Affected

2,185state residents only

Linked

2 filings

Confidence

71%

Full breach record for Horizon Lines →2 incidents on file

Matson Navigation Company, Inc. and Horizon Lines notified the Washington AG of a missing device containing PII of 2,185 mariners. The device, last backed up Nov 9, 2015, was discovered missing Dec 7, 2015. Data included SSNs, bank accounts, and medical docs. Investigation ongoing; law enforcement notified; credit monitoring offered.

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Incident timeline

undetected · 28 days

discovery → filing · 16 days

Nov 9, 2015

Begins

Dec 7, 2015

Discovered

Dec 23, 2015

Filed

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Montana State AGbd_a3580dd77d6602f72015-12-23Candidate

Name: Horizon Lines
norm: horizon lines

Name: Horizon Lines
norm: horizon lines
Industry: Transportation & Logisticsllm

Discovered: Dec 7, 2015
Breach occurred: Nov 9, 2015 – Dec 7, 2015
Undetected for: 28 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 23, 2015
Affected individuals: 2,185state-resident count only
Data types: Identity (basic)Government IDFinancial accountHealth (basic)
Data elements: Medical informationPassport numberDate of birthFinancial account numberSocial Security numberName
WA-stated cause: Theft or Mistake
WA-stated duration: lifecycle Unknowndexposure Unknownd
WA-stated discovery: Found after the fact
Attack vector: Unknown
MITRE ATT&CK: T1052 Exfiltration Over Physical Medium
Regulator citations: Reported the incident to law enforcement

During the incident: Notified our IT experts and leveraging both in-house and external expertise in our investigation
Reported the incident to law enforcement and are cooperating in their investigation
Engaged expert third parties who specialize in responding to data exposure incidents
Notifying the affected mariners about this incident
Offering the potentially impacted mariners free identity protection services
Changes made: Assessing potential changes to our data systems and procedures with the goal of further enhancing their security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 16 days(16 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Montana State AGDec 23 · first

Washington State AGDec 23 · first · this page

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/BreachM9602.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 23, 2015
Raw hash: 3616d3772b95f399d79f9cc5b907da9b1a10fde4505230cb4f29ece9285418c2

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityHorizon Lines

Victim entityHorizon Lines

Incidentdiscovered Dec 7, 2015

Stated responseNotified our IT experts and leveraging both in-house and external expertise in our investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com