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Structural and Steel Products Suffers Cyberattack

January 24, 2026

Structural and Steel Products, a Fort Worth, Texas-based manufacturer and distributor of steel products for highway construction and other infrastructure projects suffered a cyberattack in January and is just now informing victims of the hack their personally identifiable information ended up stolen in the hack.
The incident occurred January 24 and the company disclosed the information September 25. That is when Structural and Steel Products notified the Texas Attorney General’s Office of a data security incident affecting 896 Texas residents. It also said 1,143 records ended up stolen in the hack.
Information stolen in the hack include: Name of individual, Social Security Number, driver’s license number, government-issued ID number (e.g. passport, state ID card), and financial information (e.g. account number, credit or debit card number).

Nucor Steel Suspends Part of Production after Cyberattack

May 14, 2025

Nucor Corporation’s disclosed a cybersecurity incident on their IT network via an 8-K filing. The largest steel producer in the U.S. temporarily suspended production at multiple locations. though Nucor notes it is in the process of gradually restarting them. No details about the date or type of the attack were provided, so it’s unknown if the incident involved data theft or encryption.

Alleged Ransomware Attack Australian Steel Fabricator Meshworks

October 30, 2024

The Sarcoma threat group listed Meshworks on its dark web leak site, claiming to have stolen 8 gigabytes of “files”. It appears the threat group has begun ransom negotiations with Meshworks, this has not been verified by Cyber Daily.

Cyber Daily has contacted Meshworks for more information and is awaiting a response.

Ransomware Attack on German Steel Company

June 9, 2024

Westfalische Stahlgesellschaft reports on their website they have been the victim of a ransomware attack. Key IT systems were encrypted. We have already been able to restore most systems and data from back-ups and are confident that we will be able to complete this process shortly without any loss of data. Our production has not been disrupted by this incident and we have met and are confident that we will meet all delivery deadlines.

German Steel Manufacturer Shuts Down Systems and Cancels Annual Shareholder Meeting

September 22, 2024

The Aachen-based company is the target of a cyber attack. The systems have been shut down and the annual general meeting of shareholders planned for this Wednesday has also had to be cancelled.

The IT systems of the listed precision parts manufacturer were shut down early on Sunday morning due to the attack, the company announced on Tuesday. The first parts of production were able to start up again outside of the network by Sunday evening. However, for safety reasons, software systems in administration and production control were not put back into operation late on Tuesday afternoon. Security systems and access controls were also affected by the attack.

Swiss Machine Manufacturer Schlatter Industries Falls Victim to Ransomware Attack

August 9, 2024

The machine manufacturer Schlatter has fallen victim to a cyber attack, disrupting IT network and communications. The company immediately initiated security measures and involved the relevant authorities, the group announced. The attack was noticed on Friday, August 9. The group was investigating whether data was stolen and experts were working to make all systems available and functional again, Schlatter said.

CEO Werner Schmidli confirmed to ‘Netzwoche’ that he had received a ransom demand. “We found a blackmail letter on the servers.” Schmidli did not say whether Schlatter plans to respond to the demand.

The company is already preparing the market for significantly lower annual results than last year. This is partly due to the necessary postponement of projects in the welding department.

Hackers Breach Systems at Steel giant ThyssenKrupp

February 23, 2024

Steel giant ThyssenKrupp confirms that hackers breached systems in its Automotive division, forcing them to shut down IT systems as part of its response and containment effort. “The threat situation is under control, and we are working on a gradual return to normal operations,” a spokeswoman for the company said. While the shutdown halted production, she said, the company was still able to supply customers.

ThyssenKrupp has clarified that no other business units or segments have been impacted by the cyberattack, which was contained in the automotive division. They are working on gradually returning to normal operations.

Canadian Stelco Temporarily Suspended Operations

October 25, 2020

Stelco – one of Canada’s oldest and largest steelmakers – has issued a statement revealing that it was the target of a “criminal attack” on its information systems. When the cyberattack first hit, Stelco said that certain operations, which included steel production, were temporarily suspended as a precaution.

Haynes International Cyberattack Estimated Cost is $18-$20 Million

June 10, 2023

On June 10, 2023, the Company began experiencing a network outage indicative of a cybersecurity incident.
Various aspects of the Company’s networks were down.

On June 21, 2023, less than 2 weeks after the incident began, the Company announced that all manufacturing operations were running and that it had substantially restored administrative, sales, financial and customer service functions. Nevertheless, during those 11 days many aspects of the Company’s production were substantially disrupted.

German Steelmaker Hacked

April 20, 2023

The IT network of Badische Stahlwerke (BSW) is affected by unauthorized network access. BSW identified the hacker attack on Thursday. The company reacted immediately and shut down all relevant systems in an isolated and controlled manner.

This also affected parts of the production. Employees reportedly furloughed. Parts of the production facilities were started up again on Friday. Investigation is ongoing.

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