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Response snapshot Oct 26, 2026, 22:09 UTC

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Disclosed incidentcasio-ransomware-2024

Casio ransomware and internal-document leakage

Casio confirms an October 5, 2024 ransomware intrusion and leakage of internal documents containing employee, partner, and some customer information. Its investigation says CASIO ID and ClassPad.net ran on separate systems and were unaffected.

At a glance

Sources
1 source

What to do

Use Casio's official notifications and inquiry channel if affected. Be cautious of unsolicited follow-up emails and do not redistribute leaked personal information; the company describes security review and employee training as recurrence-prevention measures.

Read Casio initial unauthorized-access notice (opens a new tab)

What happened

The January 7, 2025 report identifies deficiencies in phishing defenses and global network security, but does not establish AI use or a precise affiliate-to-headquarters attack path. It found no evidence of theft from the customer database and says leaked personal information did not include credit-card information.

Related technology

Sources

  1. Primary source

    Casio initial unauthorized-access notice (opens a new tab)

    October 5, 2024 intrusion, service disruption, and the initial investigation status.

    Published Checked

  2. Primary source

    Casio ransomware investigation results (opens a new tab)

    Confirmed internal-document leakage, scope and exclusions, separate unaffected services, and prevention guidance.

    Published Checked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2025, January 7). Casio ransomware and internal-document leakage. https://kevwire.com/record/casio-ransomware-2024

MLA

"Casio ransomware and internal-document leakage." KEVWire, 7 Jan. 2025, kevwire.com/record/casio-ransomware-2024.

Chicago

KEVWire. "Casio ransomware and internal-document leakage." Last modified January 7, 2025. https://kevwire.com/record/casio-ransomware-2024.

Evidence summary (plain text)

Casio ransomware and internal-document leakage (Oct 8, 2024).
Casio confirms an October 5, 2024 ransomware intrusion and leakage of internal documents containing employee, partner, and some customer information. Its investigation says CASIO ID and ClassPad.net ran on separate systems and were unaffected.
Sources:
Casio initial unauthorized-access notice: https://world.casio.com/news/2024/1008-incident/
Casio ransomware investigation results: https://world.casio.com/news/2025/0107-incident/
Record ID: casio-ransomware-2024.
Record origin: Editorial selection.
AI evidence: Not assessed.
About this data

This record was assembled editorially. Editorial review: Oct 26, 2026. Editorial selection does not make a reported claim independently confirmed.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

Record JSON

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Record details

Record detail