Advantest Discloses Data Breach Months After Ransomware Attack
Advantest says February ransomware attackers stole names, SSNs, IDs, and medical and financial data.
Japanese chip-testing company Advantest is notifying individuals that personal data was stolen in a ransomware attack disclosed in February 2026. Stolen information includes names, dates of birth, contact details, Social Security numbers, passport and driver’s license numbers, and medical and financial data. Advantest has not given a total victim count; California filings indicate more than 500 residents, with 14 in Massachusetts and 8 in Vermont. No known ransomware group has claimed the attack, and the company says it has no evidence the data was published or misused.
- Advantest confirmed PII theft from its February 2026 ransomware attack.
- Stolen data includes SSNs, government IDs, and medical and financial records.
- California notices cover more than 500 residents; Massachusetts 14, Vermont 8.
- No ransomware group has claimed the attack, and misuse is unconfirmed.
- Vendors
- Advantest
- Victims
- Advantest
- Organizations
- AdvantestCalifornia Attorney General
- Countries
- JapanUnited States
From the original article
1 min read at securityweek.com
The Japanese chip testing giant said hackers stole personal information from its servers in the February 2026 cyberattack. The post Advantest Discloses Data Breach Months After Ransomware Attack appeared first on SecurityWeek.
By Eduard Kovacs · securityweek.com
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