Advantest America Notifies Individuals of Data Breach Affecting Personal Information

What the notice says

Advantest America, Inc. filed a notice with the California Attorney General, reported October 5, 2026, informing individuals of a cybersecurity incident that involved personally identifiable information. The notice as filed states that in February 2026 the organization became aware that an unauthorized third party had accessed its systems and extracted data from its servers, writing

The notice lists several categories of personal information identified in the assessment, presented as Advantest America states that it has , though it notes the incident may increase risk of identity theft or fraud. The organization is offering 18 months of free credit and web monitoring services through Kroll, with an activation deadline of January 4, 2027.

What the notice leaves open

The notice as filed does not state a total number of individuals affected by the incident, nor does it identify the number of California residents involved. It also does not specify how the unauthorized third party gained access to Advantest America's systems or how long the activity continued before detection.