Simpson Manufacturing, a Building Materials Maker, Attacked

October 13, 2023


Engineering and building material provider, Pleasanton, California-based Simpson Manufacturing Co. Inc., fell victim to a cyberattack Tuesday.
An 8-K disclosure filed with the Securities and Exchange Commission (SEC), the company said it experienced disruptions in its Information Technology area Tuesday and took some systems offline.
“On October 10, 2023, Simpson Manufacturing Co., Inc. experienced disruptions in its Information Technology (IT) infrastructure and applications resulting from a cybersecurity incident. 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.

Incident Date

October 10, 2023

Estimated Cost

Unknown at this time


No victims identified

Type of Malware

No Malware identified

Threat Source

No threat source identified