> JapanHacked_
[Contained][Severity: Major][Ransomware][Intrusion]

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

  1. Detected 2026-02-15
  2. Disclosed 2026-02-19
  3. 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

Open in organization search

Sources

  1. [1][Official]不正アクセスに関するお知らせAdvantest · 2026-02-19
  2. [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. [3][News]Advantest Discloses Data Breach Months After Ransomware AttackSecurityWeek · 2026-10-07