Casio Confirms Major Data Breach Affecting 8,500 Individuals
Japanese electronics leader Casio has disclosed that a significant ransomware attack in October 2023 compromised the personal data of approximately 8,500 people. The breach highlights growing cybersecurity threats facing global corporations.
Attack Details and Impact
- Date of Incident: October 5, 2023
- Attack Type: Ransomware infiltration via phishing
- Responsible Group: Underground ransomware gang (linked to Russia-based RomCom/Storm-0978)
- Data Volume Stolen: Over 200GB of sensitive information
Compromised Data Breakdown
Employee Information (6,500 individuals):
- Names and employee numbers
- Email addresses
- Gender and birth dates (partial)
- Taxpayer ID numbers
- Family data and ID card details
Business Partners (1,900+ entities):
- Contact names
- Email addresses and phone numbers
- ID card information
Customers (91 individuals):
- Personal identification details
Company Response and Recovery
Casio confirmed in an official statement that:
- Credit card information remained secure
- Most affected systems have been restored
- The G-Shock customization service in Japan remains temporarily offline
“We identified deficiencies in our phishing email protections,” acknowledged Casio spokesperson Ayuko Hara. The company emphasized it refused to negotiate with the attackers, stating: “We have not responded to any unreasonable demands from the ransomware group.”
Cybersecurity Takeaways
This incident underscores:
- The critical need for robust phishing defenses
- The growing sophistication of ransomware gangs
- The importance of rapid breach disclosure
Casio continues working with cybersecurity experts to strengthen its digital infrastructure and prevent future attacks. The company recommends affected individuals monitor for potential identity theft attempts.
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