UnknownManufacturingManufacturingGovernment IDHealth (basic)PCIFinancial accountMedium

NUCOR CORPORATION

bd_602a58f53ef5e6fe · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Jun 27, 2025

To disclose

—

Affected

1state residents only

Linked

6 filings

Confidence

95%

Full breach record for NUCOR CORPORATION →4 incidents on file

Nucor Corporation reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2025-06-27. 1 Massachusetts residents were affected.

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Massachusetts clock✓ MA credit monitoring due

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

Jun 27, 2025

Filed

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

New Hampshire State AGbd_9461555a0a074d8a2025-06-27Verified
New Hampshire State AGbd_70306daf12f7c0d82025-06-30 · +3dVerified
Indiana State AGbd_e8dd270c8f1b4b652025-06-24 · +3dVerified
Vermont State AGbd_f0b0185bf1d1823b2025-06-24 · +3dCandidate

Show 1 more filing ↓up to 7d gap

SEC 8-Kbd_5d4a1347ab3beb1c2025-06-20 · +7dVerified

Name: NUCOR CORPORATION
norm: nucor
Domain: nucor.com

Name: NUCOR CORPORATION
norm: nucor
Domain: nucor.com
Industry: Manufacturingregulator portal

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: 1state-resident count only
Data types: Government IDHealth (basic)PCI
Data elements: Social Security numberMedical informationDriver's licence numberPayment card number
Stated not affected: Financial account number
The filing states these were not involved. Categories absent from both lists were not addressed either way.
Attack vector: Unknown

Compliance flags: MA credit monitoring due
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 4 states

View merged incident ↗

SEC 8-KJun 20 · first

Indiana State AG+4d

Vermont State AG+4d

New Hampshire State AG+7d

Massachusetts State AG+7d · this page

New Hampshire State AG+10d

Pattern: first filing Jun 20, last Jun 30 (NH) — a 10-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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.mass.gov/doc/data-breach-report-2025/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jun 27, 2025
Raw hash: 0e7af724c88e18d897533ddd97aaed86fcd4c59078e411e8ecb29d83ada28982

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityNUCOR CORPORATION

Victim entityNUCOR CORPORATION

IncidentUnknown

ComplianceMA credit monitoring due

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov