Nucor Corp., the biggest steel manufacturer in North America, shut dow
n production at some
of its facilities after detecting an unauthorized intrusion into its computer systems.
The company took potentially affected systems offline and implemented othe
r containment measures, Nucor said in a disclosure filed with the Securities
and Exchange Commission on Wednesday.
Nucor said it is investigating the incident with external cybersecurity exp
erts and has notified federal law enforcement. It is currently in the process of res
tarting the affected operations, according to the statement.
A company spokesperson did not immediately respond to a request for comment.
Hackers have targeted the manufacturing industry more than any other for four years in a row, according to IBM’s X-Force 20
25 threat intelligence re
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port. The sector has experienced significant disruption from incidents involving
data theft and extortio
, with attackers exploiting outdated legacy technology that is prevalent in the industry, the report found.
US President Donald Trump has championed US steelmakers, a
mong the chief focuses of his vows to revive American manufacturing. N
ucor and its domestic peers celebrated the tariffs Trump imposed on s
teel imports as they come off their worst year since his first term in office amid
lackluster construction demand, inflation and high borrowing costs.
Nucor, headquartered in Charlotte, North Carolina, operates dozens of f
acilities across the US. The company’s net sales in the first quarter were $7.83 billion.