Clustered 5 filings across 5 jurisdictions · filing window Oct 30, 2020 → Jan 6, 2021. View entity profile → Other incidents for this victim →
incident inc_dc4116cb03ef4719 · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
CA ME MT OR WA
Time between earliest and latest filing
Not recorded for this incident
Leak precedence · Materiality delta · SEC filing delay — no leak-site claim in this cluster; no SEC 8-K in this cluster.
all State AG
per-filing reported counts
State AGs report only their own residents; bars show per-filing counts.
Earliest sighting first · deep chronology in Litigation Timeline
Oct 14, 2020
When the intrusion reportedly occurred, per the linked filings
Oct 14, 2020
Reported by WASHINGTON AG, MAINE AG, CALIFORNIA AG, OREGON AG filings
Matson Navigation Company reported a data breach to the Montana Attorney General. The breach was reported on 2020-10-30. The breach occurred on 10/14/2020. 38 Montana residents were affected.
Affected (this filing): 38
Matson Navigation Company, a business sector entity reported a unclear/unknown incident to the Washington Attorney General. The organization became aware of the incident on 2020-10-14 and filed notice on 2020-12-01. 2,991 Washington residents were affected. 48 days elapsed between awareness and notification.
Affected (this filing): 2,991
About this clustering
DisclosureLens links filings into incidents through layered matchers: deterministic rules (same source document, multistate filings of one breach, tight-window same-victim pairs), a weighted-similarity scorer for cross-source candidates, and an operator review queue for everything uncertain. Each link records its own method and confidence — shown per filing in the timeline below. The system defaults to NOT merging when uncertain, because a false merge (collapsing two unrelated breaches) is more harmful than a false split (showing related filings separately); uncertain pairs route to human review instead of auto-merging. Filing summaries shown in the timeline are AI-generated extracts — verify each against its linked source.
Matson Navigation Company reported an external system breach (hacking) on October 14, 2020, affecting approximately 25,000 individuals, including 221 Maine residents. The breach compromised names and Social Security Numbers. Matson sent written notifications and offered one year of identity theft protection services.
Affected (this filing): 25,000
Matson Navigation Company experienced a cyber-attack on October 14, 2020, where an attacker accessed parts of the network. The incident likely involved personal information of employees and former employees, including names, birth dates, contact information, and Social Security Numbers. Matson cut off access, engaged forensic and legal teams, and notified law enforcement. Identity theft protection services were offered to affected individuals.
Matson Navigation Company reported a data breach to the Oregon Attorney General. The breach was reported on 2021-01-06. The breach occurred during 1/1/2020 - 10/14/2020. The breach was discovered on 10/14/2020. 25,000 individuals were affected. Notice was sent on 10/30/202011/24/2020.
Affected (this filing): 25,000