HackingData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountMediumContained

Npk, L.L.C.

bd_09ed1169ed90732b · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 12, 2025

Filed

Sep 11, 2025

To disclose

4 weeks

Affected

1state residents only

Confidence

66%

Full breach record for Npk, L.L.C. →2 incidents on file

NPK International Inc. reported an external system breach (hacking) occurring between Oct 28-29, 2024. An unauthorized actor accessed the network and copied files containing a Maine resident's name, SSN, and financial account number. NPK discovered the incident on Aug 12, 2025, notified law enforcement, engaged forensic investigators, and mailed notification on Sep 11, 2025, offering one year of credit monitoring.

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Date basis clock✓ Clock withheld · confirmation date4 weeks discovery → filing

Incident timeline

undetected · 288 days

discovery → filing · 4 weeks / 30 days

Oct 28, 2024

Begins

Aug 12, 2025

Discovered

Sep 11, 2025

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1 affectedView incident

Name: Npk, L.L.C.
norm: npk
Domain: npkce.com

Name: Npk, L.L.C.
norm: npk
Domain: npkce.com

Discovered: Aug 12, 2025
Breach occurred: Oct 28, 2024 – Oct 29, 2024
Undetected for: 288 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 11, 2025
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Initial access: exploit_public_facing

During the incident: Took steps to secure its network
Notified law enforcement
Engaged third-party forensic firms
Established a dedicated, toll-free call center
Changes made: Implemented additional measures to enhance the security of its network
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 weeks(30 days from discovery to filing)
Compliance flags: Clock withheld · confirmation date

Status: No extraction artifact recorded for this disclosure.

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-a1252b4f8318/9f8a918a-039e-48c3-af4b-4d342ecfc51b.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 11, 2025
Raw hash: 17935c672fa482beae47ca68669bd19f45c3852671ce59a78de657757cc77bde

Reporting entityNpk, L.L.C.

Victim entityNpk, L.L.C.

Incidentdiscovered Aug 12, 2025

Stated responseTook steps to secure its network

ComplianceClock withheld · confirmation date

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov