Unauthorized access to the members-only server of 2Rinkan Yellow Hat Co., Ltd., a consolidated subsidiary, potentially resulted in leakage of personal information including names, addresses, and phone numbers. Partial service suspension and an external investigation are underway as response measures.<\/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":"9882","jir_company_name":"Yellow Hat Ltd.","jir_importance":"\u2605\u2605\u2605\u2605\u2606","jir_publication_date":"2026-04-23","jir_source_link":"https:\/\/japanir.jp\/wp-content\/uploads\/2026\/04\/9882-20260423-01.pdf","jir_short_summary":"Unauthorized access to the members-only server of 2Rinkan Yellow Hat Co., Ltd., a consolidated subsidiary, potentially resulted in leakage of personal information including names, addresses, and phone numbers. Partial service suspension and an external investigation are underway as response measures.","jir_summary":"### Details and Impact of Unauthorized Access\nOn April 20, 2026, an attack using unauthorized programs was detected on the members-only server of 2Rinkan Yellow Hat Co., Ltd., a consolidated subsidiary. Emergency measures were promptly taken to disconnect the network. As a result of the investigation, it was determined that members' personal information may have been leaked externally. The potentially leaked information includes names, addresses, phone numbers, dates of birth, gender, email addresses, member numbers, point balances, app user IDs and passwords, and vehicle information. Credit card information is managed on a separate server and is not considered to have been leaked.\n\n### Response Status and Future Measures\nFollowing discovery of the unauthorized access, the affected server was disconnected from external networks, and parts of the 2Rinkan app service were suspended. Investigations and advice are being conducted by external cybersecurity experts to implement measures to prevent recurrence. Reports have been filed with the Personal Information Protection Commission and consultations with police have taken place. Apologies and reminders have been communicated to customers via the website, in stores, and through individual emails. A dedicated inquiry contact desk is being prepared and will be announced once ready. Should material impact on business performance be confirmed, timely disclosure will be made.","jir_financial_highlights":"Potential Personal Information Leakage: Unknown (Unknown)\nScope of Impact: Names, addresses, phone numbers, dates of birth, gender, email addresses, member numbers, point balances, app user IDs, passwords, vehicle information of 2Rinkan members (Unknown)\nPotential Credit Card Information Leakage: None (Unknown)","jir_category":"","jir_hashtags":"#YellowHatLtd, #PersonalInformationLeak, #UnauthorizedAccess, #general_ir, #JapanStocks","jir_key_figures":"Unauthorized Access Detection Date: April 20, 2026\nNumber of Potentially Leaked Personal Information Items: Names, addresses, phone numbers, dates of birth, gender, email addresses, member numbers, point balances, app user IDs, passwords, vehicle information\nPotential Credit Card Information Leakage: None","jir_meta_title":"[Yellow Hat] Announcement of Potential Personal Information Leakage at Consolidated Subsidiary | April 2026","jir_meta_description":"Yellow Hat Ltd. announces potential personal information leakage due to unauthorized access to the members-only server of a consolidated subsidiary. Details on response status and future measures are provided.","jir_og_title":"[Yellow Hat] Announcement of Potential Personal Information Leakage at Consolidated Subsidiary | April 2026","jir_og_description":"Yellow Hat Ltd. confirms unauthorized access to a consolidated subsidiary's server and the potential leakage of personal information, along with disclosed countermeasures.","jir_og_image_url":"\/assets\/og\/company-general_ir.jpg","jir_chart_data_collection":"[]","ir_related_company":9250,"ir_release_date":"","ir_type":"","ir_is_new":false,"ir_document_url":"","jir_ir_type":"general_ir","footnotes":""},"sector":[],"importance":[],"class_list":["post-41980","ir_release","type-ir_release","status-publish","hentry"],"yoast_head":"\n