Advantest: ransomware attack
Semiconductor test equipment maker Advantest detected a ransomware intrusion on 15 February and disclosed it on 19 February. Later investigation confirmed data was taken from its servers, including personal information.
Disclosed
2026-02-19
Organizations involved
1
Leaked or at risk
Unknown
Downtime
Unknown
Timeline
- Detected 2026-02-15
- Disclosed 2026-02-19
- 4 days
Attack or cause
- Method
- [Ransomware][Intrusion]
- Impact
- [Data leak][Service outage]
- Entry point
- Unknown
- Ransom
- Demanded · Paid: Unknown
Data exposed or at risk
–
Organizations involved
[Breached][Major]Tokyo, ChiyodaManufacturing
Advantest Corporation
Sources
- [1][Official]不正アクセスに関するお知らせAdvantest · 2026-02-19
- [2][News]アドバンテストに不正アクセス、ランサムウェアによる被害の可能性TECH+ · 2026-02-19
- [3][News]Advantest Discloses Data Breach Months After Ransomware AttackSecurityWeek · 2026-10-07