[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f570qiEZ9w-yADjsWzdeh2WfUsYghDpeZP9LQkMNSxWk":3},{"article":4,"iocs":51},{"id":5,"title":6,"slug":7,"summary":8,"ai_summary":9,"brief":10,"full_text":11,"url":12,"image_url":13,"published_at":14,"ingested_at":15,"relevance_score":16,"entities":17,"category_id":28,"category":29,"article_tags":33},"0c1c401d-a98c-4cd1-b4ae-deb44b22172f","Advantest Discloses Data Breach Months After Ransomware Attack","advantest-discloses-data-breach-months-after-ransomware-attack-7398b7","The Japanese chip testing giant said hackers stole personal information from its servers in the February 2026 cyberattack. The post Advantest Discloses Data Breach Months After Ransomware Attack appeared first on SecurityWeek.","Japanese chip testing company Advantest has revealed that personal information was stolen during a ransomware attack that occurred in February 2026. The attackers exfiltrated sensitive data including names, dates of birth, contact details, SSNs, passport and driver's license numbers, and medical and financial information. While Advantest states there's no evidence of public disclosure or misuse, the incident may increase the risk of identity theft and fraud for affected individuals.","Advantest discloses data breach months after ransomware attack, PII stolen.","Japanese chip testing giant Advantest is informing individuals that hackers stole personal information in the ransomware attack disclosed in February 2026. Advantest, which makes automatic test equipment for chipmakers such as Intel and Samsung, said in February that hackers had breached its network and deployed ransomware. At the time, it was still working to determine whether any sensitive information had been exfiltrated. In data breach notifications sent out now, the company said the attackers stole personally identifiable information, including names, dates of birth, contact information, SSNs, passport and driver’s license numbers, and medical and financial information. “We have no information suggesting that your PII has been disclosed publicly or otherwise misused,” Advantest said. “However, this incident may have placed you at increased risk of identity theft or fraud.” The company has not disclosed how many individuals were impacted by the data breach, but its filing with the California Attorney General’s Office indicates that more than 500 California residents are affected. Advertisement. Scroll to continue reading. Notifications submitted to attorneys general in Massachusetts and Vermont list 14 and 8 affected residents, respectively. No known ransomware group appears to have taken credit for an attack on Advantest. Related: ASOS Confirms Cyberattack, Data Breach Related: Personal Information for Over 1 Million People Stolen in a Cyberattack on Arizona’s Court System Related: 8.8 Million Impacted by Data Breach at Denmark’s Central Person Register Related: 250,000 Impacted by Data Breaches at New Jersey, Texas Healthcare Firms Written By Eduard Kovacs Eduard Kovacs (@EduardKovacs) is senior managing editor at SecurityWeek. He worked as a high school IT teacher before starting a career in journalism in 2011. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering. Daily Briefing Newsletter Subscribe to the SecurityWeek Email Briefing for the latest cybersecurity threats, trends, and expert insights. 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(Matt Honea) Flipboard Reddit Whatsapp Whatsapp Email","https:\u002F\u002Fwww.securityweek.com\u002Fadvantest-discloses-data-breach-months-after-ransomware-attack\u002F","https:\u002F\u002Fwww.securityweek.com\u002Fwp-content\u002Fuploads\u002F2026\u002F02\u002FAdvantest.jpeg","2026-10-07T12:37:24+00:00","2026-10-07T14:00:13.121518+00:00",7,[18,21,24,26],{"name":19,"type":20},"Advantest","vendor",{"name":22,"type":23},"automatic test equipment","product",{"name":25,"type":20},"Intel",{"name":27,"type":20},"Samsung","2e06f76c-d5b9-4f54-9eef-4d3447b10730",{"id":28,"icon":30,"name":31,"slug":32},null,"Breaches","breaches",[34,36,41,46],{"category":35},{"id":28,"icon":30,"name":31,"slug":32},{"category":37},{"id":38,"icon":30,"name":39,"slug":40},"7d8b5ab8-ea0b-4ced-ae97-ec251b86993a","Ransomware","ransomware",{"category":42},{"id":43,"icon":30,"name":44,"slug":45},"d95477d7-eb04-4fad-a2dc-be1428040ce7","Privacy Fines","privacy-fines",{"category":47},{"id":48,"icon":30,"name":49,"slug":50},"e7b231c8-5f79-4465-8d38-1ef13aea5a14","Threat Intelligence","threat-intelligence",[]]