Advantest America, Inc.

Ransomware reached multiple portions of Advantest's IT network, traced after the Tokyo test-equipment maker spotted unusual activity on February 15, 2026. The source names no entry point, no group, no count, and cannot yet say whether customer or employee data was touched. Encryption landing across several parts of a network measures how far one intrusion was allowed to travel. Nobody has said how they got in, which is its own answer about what was being watched.