Email addresses of 381,926 subscribers to Travelko’s newsletter were leaked. Included were prefecture information for 152,655 records and postal code information for 616 records; names, addresses, phone numbers, passwords, birthdates, and credit card information were not leaked. Security enhancements and intensified monitoring will be implemented. Impact on financial performance is currently under review.<\/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,"price_fetched_at":"","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":"3926","jir_company_name":"OpenDoor Inc.","jir_importance":"\u2605\u2605\u2605\u2606\u2606","jir_publication_date":"2026-11-09","jir_source_link":"https:\/\/japanir.jp\/wp-content\/uploads\/2026\/11\/3926-20261109-01.pdf","jir_short_summary":"Email addresses of 381,926 subscribers to Travelko's newsletter were leaked. Included were prefecture information for 152,655 records and postal code information for 616 records; names, addresses, phone numbers, passwords, birthdates, and credit card information were not leaked. Security enhancements and intensified monitoring will be implemented. Impact on financial performance is currently under review.","jir_summary":"### Overview of the Incident\nWe confirmed unauthorized access by a third party to the Travel comparison site \"Travelko\" and announced that email addresses of newsletter subscribers were leaked. The leaked information consists only of email addresses, with prefecture information included in 152,655 records and postal code information included in 616 records. There is no confirmation of leakage of names, addresses, phone numbers, birthdates, passwords, or credit card information.\n\n### Response and Impact\nWe will provide individual notifications to affected customers. We commit to strengthening security measures and continuing monitoring, and the newsletter function is temporarily suspended. The incident has been reported to the police and relevant authorities. The impact on financial performance is currently being examined and we will disclose any material matters as soon as they arise.","jir_financial_highlights":"Number of records leaked: 381,926 records (Unknown)\nNumber of prefecture information records leaked: 152,655 records (Unknown)\nNumber of postal code records leaked: 616 records (Unknown)","jir_category":"","jir_hashtags":"#CompanyInformationSecurity, #PersonalDataProtection, #NotIRNews","jir_key_figures":"Number of records leaked: 381,926 records\nNumber of prefecture information records leaked: 152,655 records\nNumber of postal code records leaked: 616 records","jir_meta_title":"OpenDoor Inc. - Notice of Email Address Leakage Due to Unauthorized Access | November 9, 2026","jir_meta_description":"OpenDoor Inc. announced that 381,926 email addresses of Travelko newsletter subscribers were leaked. No names, addresses, or phone numbers were leaked. The company will implement countermeasures and review the impact on financial performance.","jir_og_title":"Notice of Email Address Leakage Due to Unauthorized Access","jir_og_description":"Subscriber information from Travelko's newsletter was leaked. The company outlines current impact and plans to strengthen security measures.","jir_og_image_url":"\/assets\/og\/company-general_ir.jpg","jir_chart_data_collection":"[]","ir_related_company":59013,"ir_release_date":"","ir_type":"","ir_is_new":false,"ir_document_url":"","jir_ir_type":"general_ir","footnotes":""},"sector":[],"importance":[],"class_list":["post-145526","ir_release","type-ir_release","status-publish","hentry"],"yoast_head":"\n