FEDERALItem 1.05 · mandatoryMalwareTechnologyManufacturingInformationTest & MeasurementRansomwareData EncryptedLowActive

Data I/O Corporation

bd_e6d75e142f5c82cf · schema v1 · pii pii-v1

Severity

Low

Discovered

Aug 16, 2025

Filed

Aug 21, 2025

To disclose

5 days

Affected

Not disclosed

Confidence

87%

Full breach record for Data I/O Corporation →3 incidents on file

On August 16, 2025, Data I/O Corporation experienced a ransomware incident affecting certain internal IT systems. The Company activated response protocols, took platforms offline, implemented containment measures, and engaged cybersecurity experts. The incident temporarily impacted operations including communications, shipping, receiving, and manufacturing production. Investigation is ongoing; full scope and impact are not yet known. Costs are reasonably likely to materially impact results of operations.

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SEC clockMateriality determined Aug 16, 2025 → Filed Aug 21, 20255d ✓ SEC 4-day OK5 days discovery → filing

⚠ occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Incident timeline

discovery → filing · 5 days

Aug 16, 2025

Begins

Aug 16, 2025

Discovered

Aug 21, 2025

Filed

vs. sector median

18 wks faster

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: Data I/O Corporation
norm: data i o
SEC CIK: 0000351998
Domain: dataio.com

Name: Data I/O Corporation
norm: data i o
SEC CIK: 0000351998
Domain: dataio.com
Industry: TechnologyllmManufacturingllm
NAICS 334515 · Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals

Discovered: Aug 16, 2025
Breach occurred: Aug 16, 2025
Undetected for: 0 daysoccurrence → discovery
Materiality determined: Aug 16, 2025
Notification sent: —
Affected individuals: Not disclosed
Data types: —
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for Impact
Threat actor: ExternalFinancial
Regulator citations: Will notify affected individuals and regulatory authorities in compliance with applicable laws

During the incident: Activated its response protocols
Took steps to secure its global IT systems and implemented containment measures
Proactively taking certain platforms offline and implementing other mitigation measures
Engaged leading cybersecurity experts to support the IT system recovery and conduct a comprehensive investigation
Working diligently to restore the affected systems
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 5 days(5 days from discovery to filing)
Compliance flags: SEC 4-day OK · 5d
Discovery-date grounding: occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.
Clock breakdown: Statute Window Elapsed Threshold Status
SEC
Materiality determined: Aug 16, 2025
→ Filed: Aug 21, 2025
5d cal. 4 business days SEC 4-day OK

Statute	Window	Elapsed	Threshold	Status
SEC	Materiality determined: Aug 16, 2025 → Filed: Aug 21, 2025	5d cal.	4 business days	SEC 4-day OK

Status: No extraction artifact recorded for this disclosure.

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filing

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statementThis record

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://www.sec.gov/Archives/edgar/data/351998/000165495425009925/daio_8k.htm
DisclosureLens renders the full SEC/HHS filing inline below from the originating regulator’s public record (§4.5 fair report privilege).
Filed at: Aug 21, 2025
Raw hash: cdc65c5cb773dc0c463c981cfb8dbd0c99da5b67dabe34e565757318c2783a53

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Reporting entityData I/O Corporation

Victim entityData I/O Corporation

Incidentdiscovered Aug 16, 2025

Stated responseActivated its response protocols

ComplianceSEC 4-day OK

Extraction provenanceno artifact recorded

Source provenancewww.sec.gov

Source filing