---
schema_version: "secwatch.filing_event.v1"
accession: "0001654954-25-009925"
form_type: "8-K"
ticker: "DAIO"
cik: "0000351998"
company_name: "DATA I/O CORP"
filed_at: "2025-08-21T23:59:59+00:00"
generated_at: "2026-05-17T10:58:32.962644+00:00"
event_type: "cyber"
sentiment: "negative"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Data I/O reports ransomware incident on Aug 16; operations temporarily impacted

## Summary
- Ransomware attack on internal IT systems discovered August 16, 2025; response protocols activated.
- Impacted operations include communications, shipping, receiving, manufacturing, and support functions.
- Company engaged leading cybersecurity experts; investigation and system restoration ongoing.
- Full restoration timeline unknown; costs for experts and system recovery expected to materially affect results.
- As of filing, incident not yet deemed material to business operations; evaluation continues.

## SEC filing metadata
- accession: 0001654954-25-009925
- form_type: 8-K
- ticker: DAIO
- cik: 0000351998
- company_name: DATA I/O CORP
- filed_at: 2025-08-21T23:59:59+00:00
- event_type: cyber
- sentiment: negative
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.05
- EDGAR index: https://www.sec.gov/Archives/edgar/data/351998/000165495425009925/0001654954-25-009925-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/351998/000165495425009925/daio_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001654954-25-009925
- JSON: https://secwatch.observer/filing/0001654954-25-009925.json
- Plain text: https://secwatch.observer/filing/0001654954-25-009925.txt

## Key facts
- Cybersecurity Incidents
  DATA I/O CORP disclosed a cybersecurity incident: ransomware incident on certain internal IT systems. Impact: temporarily impacted operations including internal/external communications, shipping, receiving, manufacturing production, and various other support functions; full restoration timeline not yet known. Materiality is still being assessed. Discovered 2025-08-16.
  - Nature: ransomware incident on certain internal IT systems
  - Impact: temporarily impacted operations including internal/external communications, shipping, receiving, manufacturing production, and various other support functions; full restoration timeline not yet known
  - Materiality: assessing
  - Discovery: 2025-08-16
  source text: On August 16, 2025, Data I/O Corporation (the “Company”) experienced a ransomware incident (the “Incident”) on certain of its internal IT systems.
  evidence_url: https://www.sec.gov/Archives/edgar/data/351998/000165495425009925/0001654954-25-009925-index.htm

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