Clustered 3 filings across 3 jurisdictions · filing window Dec 12, 2023 → Dec 13, 2023. View entity profile → Other incidents for this victim →
incident inc_fc974fc2318a4e1b · merge_method deterministic · confidence 100%
Discovered → first regulatory filing
Range of discovered_at dates across filings
ME MT VT
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
Earliest sighting first · deep chronology in Litigation Timeline
Jul 29, 2023
When the intrusion reportedly occurred, per the linked filings
Jul 29, 2023
Reported by VERMONT AG, MAINE AG filings
Warrior Met Coal, Inc. notified Vermont consumers of a July 29, 2023 security incident involving sophisticated malware that evaded antivirus defenses. The attacker targeted systems to extort payment, accessing files containing personal information. The company took systems offline, engaged experts, recovered files, and offered free credit monitoring. No actual misuse was known at the time of notice.
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.
Warrior Met Coal, Inc reported a data breach to the Montana Attorney General. The breach was reported on 2023-12-13. The breach occurred on 7/29/2023. 10 Montana residents were affected.
Affected (this filing): 10
Warrior Met Coal, Inc. reported an external system breach (hacking) on July 29, 2023, affecting 19,794 individuals, including 4 Maine residents. The breach compromised names and Social Security Numbers. The company provided written notification on December 12, 2023, and offered 12 months of complimentary credit and identity monitoring services.
Affected (this filing): 19,794