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Advantest says impact of February cyberattack is nearly resolved
Thursday, February 19, 2026 at 05:13 AM
Advantest has reported that the operational impact from the cyberattack it experienced in February has been largely resolved. The company confirms that manufacturing and supply chain processes are returning to normal following the security incident.
Context
On February 15, 2026, the Japanese semiconductor testing giant Advantest detected a ransomware attack that disrupted its internal IT infrastructure. As a critical supplier of automatic test equipment for AI accelerators, 5G systems, and high-performance computing, the company was forced to isolate affected systems and engage third-party experts. While the incident did not halt physical production, it caused significant bottlenecks in order processing, logistics, and internal communications across the global supply chain.
Advantest has now reported that the impact is nearly resolved, following a month of remediation. The incident occurred during a period of record growth for the company, which recently raised its annual operating profit forecast by 21.4% to 454 billion yen ($2.97 billion) due to surging demand for HBM and SoC testers. This cyberattack underscores the vulnerability of the semiconductor ecosystem as manufacturers face increasing threats from industrial ransomware groups targeting high-value intellectual property and logistics nodes.
Sources (11)
Risk Factors｜Management Information｜ADVANTEST CORPORATION[PDF] OT Security Guidelines for Semiconductor Device FactoriesAdvantest shares jump as much as 14% as AI chip boom drives record salesMajor Japanese semiconductor supplier hit by ransomware attack | TechRadarAdvantest Corporation Ransomware Attack: 2026 Cyber Incident Impacting Internal IT Systems and Supply Chain SecurityLeading Japanese semiconductor supplier responding to ransomware attack | The Record from Recorded Future NewsRansomware Minute: Latest Attacks And News - Cybercrime MagazineChip Testing Giant Advantest Hit by Ransomware - SecurityWeek
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