Nucor reports cybersecurity incident; halts some production, now restarting

NUCOR CORP

Unauthorized third-party access to IT systems detected; incident response plan activated.
Potentially affected systems taken offline; certain production operations temporarily halted.
Restarting affected operations; investigation ongoing with external experts and federal law enforcement.
No specifics on data compromise, customer impact, or financial exposure yet; company monitoring materiality.

Key facts

Extracted from this filing and checked against the source text.

Cybersecurity Incidents SEC 8-K Item 1.05 confidence 0.9

NUCOR CORP disclosed a cybersecurity incident: Unauthorized third party access to certain information technology systems. Impact: Temporarily and proactively halted certain production operations at various locations; currently in the process of restarting affected operations. Materiality is still being assessed.

Nature: Unauthorized third party access to certain information technology systems
Impact: Temporarily and proactively halted certain production operations at various locations; currently in the process of restarting affected operations
Materiality: assessing

Exact text from the filing

As the investigation of the incident is ongoing, the Company will continue to monitor the timing and materiality of the incident.

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NUCOR CORP filing history →

Source: SEC EDGAR

accession 0001193125-25-119311

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