Advantest discloses stolen personal information: stock after-hours at EUR 231.35, minus 2.56 percent
Published on 10/07/2026 at 21:20 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS
On October 7, 2026, SecurityWeek reported that Advantest was informing individuals that hackers had stolen personal information in a ransomware attack disclosed in February. At 9:11 p.m. CEST, Advantest stock was at EUR 231.35 after-hours, down 2.56 percent versus the prior close at Lang & Schwarz.
Trading in Tokyo and Germany
The prior close at Lang & Schwarz was EUR 237.43 on October 6, 2026. The venue showed a bid of EUR 230.55 and an ask of EUR 232.15. The Tokyo Stock Exchange close for Advantest was JPY 41,290 on October 7, 2026, according to structured market data, with the exchange session marked closed. The further course of after-hours trading at Lang & Schwarz until 11:00 p.m. CEST is shown by the continuously updated real-time quote of Advantest stock.
Personal information in ransomware notification
BleepingComputer reported that a data-breach notification dated October 6, 2026, said an unauthorized third party had accessed Advantest systems and extracted data from its servers. The notification said the extracted data included personally identifiable information belonging to recipients.
SecurityWeek reported that the categories listed in the notifications included names, dates of birth, contact information, Social Security numbers, passport and driver’s license numbers, and medical and financial information. Advantest said it had no information suggesting that the data had been publicly disclosed or misused, while acknowledging an increased risk of identity theft or fraud.
