Advantest Corporation hit by ransomware attack
Incident
Summary
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Advantest Corporation disclosed a ransomware intrusion after detecting an IT network intrusion on February 15. Preliminary findings indicate an unauthorized third party may have accessed portions of the company’s network and deployed ransomware. The company has not confirmed whether customer or employee data was affected, and no group has claimed the attack.
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Timeline
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23.02.2026 13:30 1 articles · 3mo ago
Advantest Corporation says no data breach has been confirmed
Victim Impact UpdateAs of February 23, 2026, Advantest Corporation said it had not confirmed a data breach after its ransomware incident and continued its investigation. The company said it had not confirmed which IT services were compromised or whether customer or employee data was affected.
Show sources
- Leading Semiconductor Supplier Advantest Hit by Ransomware Attack — www.infosecurity-magazine.com — 23.02.2026 13:30
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20.02.2026 11:31 1 articles · 3mo ago
Advantest Corporation detects network intrusion and ransomware deployment
Exploitation ObservedAdvantest Corporation detected an IT network intrusion on February 15, 2026, and preliminary findings indicated that an unauthorized third party may have accessed portions of its network and deployed ransomware.
Show sources
- Chip Testing Giant Advantest Hit by Ransomware — www.securityweek.com — 20.02.2026 11:31
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20.02.2026 11:31 3 articles · 3mo ago
Advantest Corporation publicly discloses ransomware intrusion
Initial DisclosureAdvantest Corporation disclosed on February 20, 2026 that it had detected an IT network intrusion on February 15 and immediately activated incident response protocols, while saying its investigation had not yet confirmed whether customer or employee data was affected.
Show sources
- Chip Testing Giant Advantest Hit by Ransomware — www.securityweek.com — 20.02.2026 11:31
- Chip Testing Giant Advantest Hit by Ransomware — www.securityweek.com — 20.02.2026 11:31
- Japanese tech giant Advantest hit by ransomware attack — www.bleepingcomputer.com — 20.02.2026 20:30