---
schema_version: "secwatch.filing_event.v1"
accession: "0001654954-25-010613"
form_type: "8-K"
ticker: "DAIO"
cik: "0000351998"
company_name: "DATA I/O CORP"
filed_at: "2025-09-10T23:59:59+00:00"
generated_at: "2026-05-17T07:08:45.082556+00:00"
event_type: "cyber"
sentiment: "negative"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Data I/O provides update on ransomware incident; costs estimated at $388K

## Summary
- Incident originated from third-party firewall vulnerability; not targeted.
- All affected systems restored; order flow and revenue unaffected.
- Third-quarter expenses for remediation and investigation total ~$388,000.
- Company says IT systems are now strengthened and no risk exposure remains.

## SEC filing metadata
- accession: 0001654954-25-010613
- form_type: 8-K
- ticker: DAIO
- cik: 0000351998
- company_name: DATA I/O CORP
- filed_at: 2025-09-10T23:59:59+00:00
- event_type: cyber
- sentiment: negative
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.05, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/351998/000165495425010613/0001654954-25-010613-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/351998/000165495425010613/daio_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001654954-25-010613
- JSON: https://secwatch.observer/filing/0001654954-25-010613.json
- Plain text: https://secwatch.observer/filing/0001654954-25-010613.txt

## Key facts
- Cybersecurity Incidents
  DATA I/O CORP disclosed a cybersecurity incident: ransomware incident on certain internal IT systems, originating from a vulnerability of a third-party firewall service provider. Impact: temporarily impacted operations including internal/external communications, shipping, receiving, manufacturing production, and other support functions; estimated remediation and investigation costs of approximately $388,000 expected to have a material impact on results of operations and financial co. Company determined it material. Discovered 2025-08-16.
  - Nature: ransomware incident on certain internal IT systems, originating from a vulnerability of a third-party firewall service provider
  - Impact: temporarily impacted operations including internal/external communications, shipping, receiving, manufacturing production, and other support functions; estimated remediation and investigation costs of approximately $388,000 expected to have a material impact on results of operations and financial co
  - Materiality: determined material
  - Discovery: 2025-08-16
  source text: estimated costs related to the Incident for remediation, restoration and investigation efforts are expected to total approximately $388,000 in expenses in the third quarter ending September 30, 2025 and will likely have a material impact on the Company’s results of operations and financial condition.
  evidence_url: https://www.sec.gov/Archives/edgar/data/351998/000165495425010613/0001654954-25-010613-index.htm

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