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Advantest, a Japanese semiconductor test equipment supplier, is responding to a ransomware attack that has affected several of its systems. The company detected unusual IT activity and initiated incident response protocols.

Investigation is ongoing with cybersecurity experts to assess the extent of the breach. Advantest reported over $6.4 billion in sales last fiscal year, highlighting the critical role of its tools in global semiconductor production. The surge in ransomware targeting manufacturing industries has been noted, with 119 gangs reported in 2025.