---
schema_version: "secwatch.filing_event.v1"
accession: "0000920371-23-000167"
form_type: "8-K"
ticker: "SSD"
cik: "0000920371"
company_name: "Simpson Manufacturing Co., Inc."
filed_at: "2023-10-11T23:59:59+00:00"
generated_at: "2026-06-10T01:56:23.522391+00:00"
event_type: "cyber"
sentiment: "negative"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "medium"
source: SEC EDGAR
---

# Simpson Manufacturing discloses cybersecurity incident causing IT system disruptions

## Summary
- Cyber incident detected Oct 10, 2023; malicious activity led to disruption of IT infrastructure and applications.
- Company took certain systems offline to stop and remediate the activity; business operations impacted.
- Engaged third-party cybersecurity experts; investigation into nature and scope is ongoing and early-stage.
- No details yet on data compromise, financial impact, or recovery timeline.

## SEC filing metadata
- accession: 0000920371-23-000167
- form_type: 8-K
- ticker: SSD
- cik: 0000920371
- company_name: Simpson Manufacturing Co., Inc.
- filed_at: 2023-10-11T23:59:59+00:00
- event_type: cyber
- sentiment: negative
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: medium
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/920371/000092037123000167/0000920371-23-000167-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/920371/000092037123000167/ssd-20231010.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000920371-23-000167
- JSON: https://secwatch.observer/filing/0000920371-23-000167.json
- Plain text: https://secwatch.observer/filing/0000920371-23-000167.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.