HackingOtherData ExfiltratedCustomer Data InvolvedGovernment IDIdentity (basic)HighContained

WARRIOR MET COAL, INC.

bd_70dc7765fe9266b8 · schema v1 · pii pii-v1

Severity

High

Discovered

Jul 29, 2023

Filed

Dec 13, 2023

To disclose

20 weeks

Affected · nationwide

19,7944 in this filing

Linked

4 filings

Confidence

66%

Full breach record for WARRIOR MET COAL, INC. →

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.

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Maine clockDiscovered Jul 29, 2023 → Filed with AG Dec 13, 2023137d ⏱ ME AG >30d20 weeks discovery → filing

Incident timeline

discovery → filing · 20 weeks / 137 days

Jul 29, 2023

Begins

Jul 29, 2023

Discovered

Dec 13, 2023

Filed

vs. sector median

+14 wks slower

This filing is one of 4 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Montana State AGbd_4378636ddfffb12b2023-12-13Candidate
Massachusetts State AGbd_54fadf9b54d9ff212023-12-13Verified
Vermont State AGbd_191319968fbd909b2023-12-12 · +1dVerified

Name: Maynard Nexsen PC
norm: maynard nexsen

Name: WARRIOR MET COAL, INC.
norm: warrior met coal
Industry: Otherllm

Discovered: Jul 29, 2023
Breach occurred: Jul 29, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 12, 2023
Affected individuals: 19,794state + nationwide
Data types: Government IDIdentity (basic)
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: Filed data breach notice with Maine Attorney General
Initial access: exploit_public_facing

During the incident: Sent written notification to affected individuals
Offered 12 months of complimentary credit and identity monitoring services
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 20 weeks(137 days from discovery to filing)
Compliance flags: ME AG >30d · 137dME resident >60d · 136d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Jul 29, 2023
→ Filed with AG: Dec 13, 2023
137d 30 days (soft) ME AG >30d
Maine
Discovered: Jul 29, 2023
→ Notified: Dec 12, 2023
136d 60 days (analyst band; statutory cap is 30 days) ME resident >60d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jul 29, 2023 → Filed with AG: Dec 13, 2023	137d	30 days (soft)	ME AG >30d
Maine	Discovered: Jul 29, 2023 → Notified: Dec 12, 2023	136d	60 days (analyst band; statutory cap is 30 days)	ME resident >60d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Vermont State AGDec 12 · first

Montana State AG+1d

Massachusetts State AG+1d

Maine State AG+1d · 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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/07b63897-11f6-47e8-accc-8bdb5cf430a8.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 13, 2023
Raw hash: 001742a94e2507d39519c1b33ffb964ce85b9cdf320caaedcc999c3812860208

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityMaynard Nexsen PC

Victim entityWARRIOR MET COAL, INC.

Incidentdiscovered Jul 29, 2023

Stated responseSent written notification to affected individuals

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov