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yesterday

Nucor Cybersecurity Breach Prompts Production Shutdowns

The U.S.'s largest steel producer has contained the breach and begun restarting operations while investigations continue into the scope and perpetrators of the attack.

A sign for the Nucor Steel Mill, under construction, is seen in Sedalia, Missouri, U.S., October 3, 2018. Picture taken October 3, 2018. To match Insight USA-TRADE/NUCOR. REUTERS/Lawrence Bryant
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Overview

  • Nucor Corporation detected unauthorized access to its IT systems, prompting precautionary shutdowns of certain production operations.
  • The company has since contained the breach and is gradually resuming production across its facilities in North America.
  • An investigation is underway with the assistance of external cybersecurity experts and federal law enforcement, but the full impact remains unclear.
  • Nucor filed an SEC disclosure and emphasized its commitment to monitoring the situation and mitigating potential risks.
  • As a key supplier of steel for critical infrastructure, disruptions at Nucor could have significant implications for North American supply chains.