Reconfirmed scope and cause of personal information leak due to unauthorized access based on a third-party investigation. Approximately 179,7124 people were affected; mainly name, address, date of birth, gender, and contact details. No credit card information was collected or handled. Recurrence prevention measures have been implemented and vulnerability assessments will continue. Future impact on financial results is expected to be not material.<\/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":"9882","jir_company_name":"Yellow Hat Ltd.","jir_importance":"\u2605\u2605\u2605\u2606\u2606","jir_publication_date":"2026-10-15","jir_source_link":"https:\/\/japanir.jp\/wp-content\/uploads\/2026\/10\/9882-20261015-01.pdf","jir_short_summary":"Reconfirmed scope and cause of personal information leak due to unauthorized access based on a third-party investigation. Approximately 179,7124 people were affected; mainly name, address, date of birth, gender, and contact details. No credit card information was collected or handled. Recurrence prevention measures have been implemented and vulnerability assessments will continue. Future impact on financial results is expected to be not material.","jir_summary":"### Overview and Cause\nThis second report concerns a personal information leak caused by unauthorized access to the Yellow Hat WEB work reservation system, and it discloses the results of a third-party investigation and recurrence prevention measures. The affected scope is approximately 1,797,124 records and includes name, address, date of birth, gender, telephone number, and other items. No credit card information was collected or managed, so there was no leakage of such information. Upon discovery, the system was immediately shut down and later restarted, and security reinforcements were implemented. Regular vulnerability assessments will continue going forward.\n\n### Impact and Response\nAffected customers are being notified individually and a dedicated contact window has been established to continue responses. To prevent further damage, warnings regarding related URLs and links have been issued, and inquiries are being handled via a dedicated help desk. Looking ahead, response costs are not expected to have a material impact on financial results.","jir_financial_highlights":"Number of records affected: 1,797,124 people (Corrected from up to 1,801,499 people stated in the first report)\nTypes of data affected: Name, address, date of birth, gender, telephone number, email address, member number, login ID, password (in a non-recoverable state) (Additional data items identified)","jir_category":"","jir_hashtags":"#YellowHatInfo, #PersonalDataLeak, #DisclosureUpdate","jir_key_figures":"Number of records affected: 1,797,124 people\nDifference from first report: corrected from up to 1,801,499 people \u2192 1,797,124 people\nTypes of data affected: Name \u00b7 Address \u00b7 Date of birth \u00b7 Gender \u00b7 Telephone number \u00b7 Email address \u00b7 Member number \u00b7 Login ID \u00b7 Password (non-recoverable state)","jir_meta_title":"Yellow Hat Ltd. \u2014 Second Report on Personal Data Leak Due to Unauthorized Access | October 2026","jir_meta_description":"Yellow Hat Ltd. publishes a second report on a personal data leak caused by unauthorized access. Approximately 1.79 million records affected; main items include name, address, and date of birth. No credit card information involved. Describes recurrence prevention measures and future response.","jir_og_title":"Yellow Hat Ltd. \u2014 Second Report on Personal Data Leak | October 2026","jir_og_description":"Reports the findings of a third-party investigation and recurrence prevention measures. Approximately 1.79 million records affected. No credit card information involved. Vulnerability assessments will continue.","jir_og_image_url":"\/assets\/og\/company-disclosure_update.jpg","jir_chart_data_collection":"[]","ir_related_company":9250,"ir_release_date":"","ir_type":"","ir_is_new":false,"ir_document_url":"","jir_ir_type":"disclosure_update","footnotes":""},"sector":[],"importance":[],"class_list":["post-131602","ir_release","type-ir_release","status-publish","hentry"],"yoast_head":"\n