A cybersecurity incident involving ransomware occurred on our network on February 15, 2026. Investigation is ongoing and the impact on business performance is currently unknown.<\/p>\n","protected":false},"comment_status":"open","ping_status":"closed","template":"","meta":{"Ticker":"","DATE":"","longName":"","company_name_ja":"","fullTimeEmployees":0,"address":"","phone":"","website":"","industry":"","sector":"","regularMarketPrice":0,"financialCurrency":"","marketCap":0,"fiftyTwoWeekLow":0,"fiftyTwoWeekHigh":0,"epsTrailingTwelveMonths":0,"epsForward":0,"bookValue":0,"totalRevenue":0,"OperatingIncome":0,"operatingMargins":0,"NetIncome":0,"profitMargins":0,"ebitda":0,"trailingPE":0,"forwardPE":0,"priceToBook":0,"returnOnEquity":0,"recommendationMean":0,"recommendationKey":"","targetMeanPrice":0,"numberOfAnalystOpinions":0,"analyst_earnings_data":"","dividendRate":0,"dividendYield":0,"payoutRatio":0,"totalEsg":0,"environmentScore":0,"socialScore":0,"governanceScore":0,"title":"","providerPublishTime":"","link":"","longBusinessSummary":"","longBusinessSummary_ja":"","quarterly_revenue":0,"quarterly_net_income":0,"quarterly_operating_profit":0,"enterprise_value":0,"company_officer_1_name":"","company_officer_1_title":"","company_officer_2_name":"","company_officer_2_title":"","company_officer_3_name":"","company_officer_3_title":"","company_officer_4_name":"","company_officer_4_title":"","company_officer_5_name":"","company_officer_5_title":"","company_officers_update_time":"","get_dividend_history_year1":0,"get_dividend_history_year2":0,"get_dividend_history_year3":0,"get_dividend_history_year4":0,"get_dividend_history_year5":0,"get_dividend_history_year6":0,"get_dividend_history_year7":0,"get_dividend_history_year8":0,"get_dividend_history_year9":0,"get_dividend_history_year10":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"jir_stock_code":"6857","jir_company_name":"Advantest Corporation","jir_importance":"\u2605\u2605\u2605\u2605\u2606","jir_publication_date":"2026-02-19","jir_source_link":"https:\/\/japanir.jp\/wp-content\/uploads\/2026\/02\/6857-20260219-01.pdf","jir_short_summary":"A cybersecurity incident involving ransomware occurred on our network on February 15, 2026. Investigation is ongoing and the impact on business performance is currently unknown.","jir_summary":"### Overview of the Incident\nOn February 15, 2026, Japan time, abnormal activity was detected within our IT environment, and a cybersecurity incident involving ransomware occurred. We immediately established a crisis management system, isolated affected systems, and are working closely with external cybersecurity experts to investigate and prevent further damage.\n\n### Future Response and Impact on Business Performance\nInvestigation is ongoing, and if any impact on customer or employee information is confirmed, we plan to promptly notify and take necessary actions. The impact on business performance is under careful examination, and if any significant effects are identified, we will disclose them without delay.","jir_financial_highlights":"Impact on Performance: Unknown (Under Investigation)","jir_category":"","jir_hashtags":"#AdvantestCorporation, #general_ir, #Cybersecurity","jir_key_figures":"Incident Occurrence Date: February 15, 2026\nInvestigation Start Date: February 15, 2026\nImpact on Performance: Unknown (Under Investigation)","jir_meta_title":"Advantest Corporation Cybersecurity Incident Occurrence and Investigation Status (February 2026)","jir_meta_description":"Advantest Corporation detected a cybersecurity incident involving ransomware on February 15, 2026. Investigation is ongoing and the impact on business performance is undetermined. Reporting on future responses.","jir_og_title":"Advantest Corporation Notice Regarding Cybersecurity Incident","jir_og_description":"We provide an overview and update on response status regarding the ransomware-related cyber incident that occurred on February 15, 2026.","jir_og_image_url":"\/assets\/og\/company-general_ir.jpg","jir_chart_data_collection":"[]","ir_related_company":6854,"ir_release_date":"","ir_type":"","ir_is_new":false,"ir_document_url":"","jir_ir_type":"general_ir","footnotes":""},"sector":[],"importance":[],"class_list":["post-30076","ir_release","type-ir_release","status-publish","hentry"],"yoast_head":"\n