HackingManufacturingManufacturingStolen CredentialsData ExfiltratedCustomer Data InvolvedEmployee Data InvolvedIdentity (basic)Government IDFinancial accountFinancial credentialsHealth (basic)PIIMediumContained

NCH CORPORATION

bd_f4b9cb299ae5fa90 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 9, 2026

Filed

May 1, 2026

To disclose

—

Affected

29state residents only

Linked

18 filings

Confidence

66%

Full breach record for NCH CORPORATION →4 incidents on file

NCH Corporation, an industrial maintenance and water treatment provider, disclosed a breach affecting 29 Nebraska residents. Unauthorized access occurred between Jan 21 and Feb 25, 2026. NCH discovered the incident on March 9, 2026, and began notifying residents on May 1, 2026. Exposed data included names, SSNs, DOBs, and potentially financial/medical info. NCH engaged third-party cybersecurity professionals, notified law enforcement, and offered one year of IDX identity monitoring.

J jump to incidentP pin to compareR raw source

Leak gap clock⏱ Leak >90d

Incident timeline

undetected · 47 days

Jan 21, 2026

Begins

Mar 9, 2026

Discovered

May 1, 2026

Filed

This filing is one of 18 about the same incident.View merged incident

A leak claim by cl0p about this victim predates this filing by 160 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteembargobd_1baf0331620d3d062026-03-09 · +52dVerified by operator

Regulatory filings (9) · sorted by filing gap

New Hampshire State AGbd_2a8be8acf60543c62026-05-01Verified by operator
Vermont State AGbd_4194fd4f05a95e972026-05-01Verified by operator
Maine State AGbd_43ee4726090e90612026-05-01Verified
Indiana State AGbd_b1ef5142cadc51242026-05-01Verified by operator

Show 5 more filings ↓up to 147d gap

Massachusetts State AGbd_df70bf7a043fe76e2026-05-01Verified by operator
Texas State AGbd_f1f602a50bc76d642026-05-05 · +4dVerified
Texas State AGbd_36bfa79ae2b695442025-12-09 · +143dVerified
Massachusetts State AGbd_42dfca2c52713f4a2025-12-05 · +147dVerified
New Hampshire State AGbd_468c94ee52fa3fc52025-12-05 · +147dVerified

Showing first 10 of 17 linked disclosures.

Name: NCH CORPORATION
norm: nch
Domain: nch.com

Name: NCH CORPORATION
norm: nch
Domain: nch.com
Industry: Manufacturingllm

Discovered: Mar 9, 2026
Breach occurred: Jan 21, 2026 – Feb 25, 2026
Undetected for: 47 daysoccurrence → discovery
Materiality determined: —
Notification sent: May 1, 2026
Affected individuals: 29state-resident count only
Data types: Identity (basic)Government IDFinancial accountFinancial credentialsHealth (basic)PII
Data elements: Social Security numberDate of birthMedical information
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: notified law enforcement
Initial access: valid_credentials

During the incident: Implemented its response procedures
Took containment measures
Launched an investigation with the support of third-party cybersecurity professionals
Notified law enforcement
Established a toll-free call center
Offering one year of complimentary identity monitoring services through IDX
Changes made: Taken steps to enhance its existing security measures
Source: Quoted from the filing itself, not independently verified.

Compliance flags: Leak >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 10 filings · 7 states

View merged incident ↗

Massachusetts State AGDec 5 · first

New Hampshire State AGDec 5 · first

Texas State AG+4d

New Hampshire State AG+147d

Vermont State AG+147d

Maine State AG+147d

Indiana State AG+147d

Massachusetts State AG+147d

Nebraska State AG+147d · this page

Texas State AG+151d

Pattern: first filing Dec 5 (MA), last May 5 (TX) — a 151-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 17 — the full spread may be wider.

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://nebraska.gov/ago/data-breach/documents/af2f5da9-94e4-4f52-b0a3-2dcd312d2c79.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 1, 2026
Raw hash: e7f8a9bc9c30d0f3b33209ef4b3e88ede6ae035c4d42fdf49c91c2eb71e57dc1

Linked disclosures

Ransomware claims (1)

Regulatory filings (9) · sorted by filing gap

Reporting entityNCH CORPORATION

Victim entityNCH CORPORATION

Incidentdiscovered Mar 9, 2026

Stated responseImplemented its response procedures

ComplianceLeak >90d

Extraction provenanceno artifact recorded

Source provenancenebraska.gov