Advantest confirms PII stolen in February ransomware attack
Advantest Corporation has started notifying people whose personal data was stolen in a ransomware attack on its network earlier this year, BleepingComputer reports.
The Japanese company builds automated test equipment for the semiconductor industry and sells it worldwide. The attack happened on February 15, 2026. A threat actor got into Advantest's network, reached some of its systems and deployed a ransomware payload.
In its first disclosure, Advantest confirmed the intrusion and the encryption, but said it did not yet know whether customer or employee data had been affected. That question now has an answer.
Notification confirms data theft
A data breach notification dated October 6, 2026, says the attackers took data from the company's servers.