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Advantest, a Tokyo-based semiconductor test equipment supplier, is managing a ransomware attack that has compromised several company systems. The incident was detected on Sunday, prompting the activation of incident response protocols and isolation of affected systems.

Preliminary assessments suggest unauthorized access to the company's network. The investigation is ongoing in collaboration with cybersecurity experts to evaluate the attack's impact. Advantest generated over $6.4 billion in sales last fiscal year. The ransomware threat to the semiconductor sector has escalated, with 119 gangs targeting industrial organizations in 2025, marking a 50% increase from 2024.