Advantest Confirms Data Stolen in February Ransomware Attack
Advantest says personal data was taken from its servers in the February 2026 incident, and is offering 18 months of free monitoring through Kroll.
Advantest has confirmed that personal information was stolen from its servers during a February 2026 ransomware attack, according to a data breach notification dated October 6, 2026.
The company said personally identifiable information was extracted from its systems in the incident. The exposed data types include contact information, date of birth, Social Security Number, National ID number, driver's license, passport number, medical information, and financial information.
Advantest is offering free 18-month identity theft, credit, and web monitoring services through Kroll. Enrollment in the program is open until January 4, 2027.
The company said it has no information that the compromised data has been leaked or misused.
Earlier incident
On February 15, 2026, a threat actor breached Advantest's network and deployed a ransomware payload. At the time, the company could not determine whether customer or employee data had been impacted.
Quick answers
What data was exposed in the Advantest breach?
Contact information, date of birth, Social Security Number, National ID number, driver's license, passport number, medical information, and financial information.
How long is the free identity monitoring from Advantest?
18 months of identity theft, credit, and web monitoring services from Kroll.
When does enrollment for the Advantest monitoring end?
Enrollment is open until January 4, 2027.