US construction giant unearths concrete evidence of cyberattack

US construction giant unearths concrete evidence of cyberattack

Simpson Manufacturing Company yanked some tech systems offline this week to contain a cyberattack it expects will "continue to cause disruption."


The California-headquartered engineering biz, which produces wood and concrete construction products designed make structures more safe, confirmed the digital assault on the same day it was spotted.


"On October 10, 2023, Simpson Manufacturing Co., Inc. experienced disruptions in its Information Technology (IT) infrastructure and applications resulting from a cybersecurity incident," it states in an SEC filing [PDF].

"After becoming aware of the malicious activity, the Company began taking steps to stop and remediate the activity, including taking certain systems offline. The Company is working diligently to respond to and address this issue. The incident has caused, and is expected to continue to cause, disruption to parts of the Company's business operations."

The statement indicates a possible ransomware infection that the business is endeavoring to overcome but this remains unconfirmed at the time of writing. It is certainly a rich target for criminals, operating multiple research labs and holding thousands of patents and trademarks.


It employs more than 5,000 people across global operations, has a market capitalization of $6.1 billion, and turned over more than $2.1 billion in sales in the last full calendar year. The majority of its products are made in the US but some are produced in Europe, Canada, and Asia.

As is typical in these situations, Simpson Manufacturing has brought in third-party specialists to "support its investigation and recovery efforts." It added: "The investigation to assess the nature and scope of the incident remains ongoing and is in its early stages."
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