PhysicalTransportation & LogisticsTransportationLossCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumActive

Horizon Lines

bd_a3580dd77d6602f7 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 7, 2015

Filed

Dec 23, 2015

To disclose

16 days

Affected

43state residents only

Linked

2 filings

Confidence

64%

Full breach record for Horizon Lines →2 incidents on file

Horizon Lines reported the loss of a device containing mariner PII (names, SSNs, bank details) between Nov 9 and Dec 7, 2015. Discovered Dec 7, 2015. Notices sent Dec 23, 2015. Law enforcement notified; identity protection offered. No evidence of misuse found.

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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

Washington State AGbd_c470f6011b8cc27c2015-12-23Verified

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: 43state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unknown
MITRE ATT&CK: T1052 Exfiltration Over Physical Medium
Regulator citations: Reported the incident to law enforcement

During the incident: Reported the incident to law enforcement and is cooperating in their investigation
Arranged to have AllClear ID protect your identity for up to 12 months at no cost
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 ↗

Washington State AGDec 23 · first

Montana 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://dojmt.gov/wp-content/uploads/Matson-Navigation-Company-and-Horizon-Lines.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: abee0c58b0732fbd2312a4f79d754b9dda31710a1a9c58cfcc9a4cddb93e4966

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityHorizon Lines

Victim entityHorizon Lines

Incidentdiscovered Dec 7, 2015

Stated responseReported the incident to law enforcement and is cooperating in their investigation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov