Summary: Casio has concluded its investigation into a ransomware attack that compromised the personal information of thousands of employees and business partners. The breach was attributed to vulnerabilities in overseas offices and phishing emails that allowed unauthorized access to their network.

Threat Actor: Underground | Underground
Victim: Casio | Casio

Key Point :

• Approximately 6,500 employees’ personal information was compromised, including names, email addresses, and taxpayer IDs.
• About 1,900 business partners were affected, with sensitive details such as company names and contact information exposed.
• Casio confirmed that while corporate documents and internal data were stolen, no payment card information was included in the compromised files.
• The ransomware group Underground claimed responsibility and threatened to leak the stolen data.
• Over 200 GB of data was reportedly stolen, with some made available on a Tor leak website.