Gyet Co., Ltd. disclosed a potential personal information leakage via the \u2018Blast Mail\u2019 service. The number of affected records is under examination; leaked data may include names, email addresses, dates of birth, and other details. Distribution has been suspended, and reports to relevant authorities and investigations into the scope of impact are ongoing. The company expects only a minor impact on business performance.<\/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":"7603","jir_company_name":"Gyet Co., Ltd.","jir_importance":"\u2605\u2605\u2605\u2606\u2606","jir_publication_date":"2026-10-23","jir_source_link":"https:\/\/japanir.jp\/wp-content\/uploads\/2026\/10\/7603-20261023-01.pdf","jir_short_summary":"Gyet Co., Ltd. disclosed a potential personal information leakage via the \u2018Blast Mail\u2019 service. The number of affected records is under examination; leaked data may include names, email addresses, dates of birth, and other details. Distribution has been suspended, and reports to relevant authorities and investigations into the scope of impact are ongoing. The company expects only a minor impact on business performance.","jir_summary":"### Overview and Background\nUnauthorized access occurred to an external service used to distribute Mac-House email newsletters operated by the Company, resulting in a potential leakage of personal information registered in the distribution list. Distribution is currently suspended and the number of affected records is under review. As required by law, the Company will report to relevant authorities and notify affected customers.\n\n### Impact on Investors and Future Measures\nThe Company recognizes that this incident will have a minor impact on consolidated financial results and will promptly disclose any additional matters as they arise. The Company plans to appropriately report to investors on the implementation status of recurrence prevention measures, determination of the scope of impact, and strengthening of personal data protection.","jir_financial_highlights":"Impact on consolidated financial results: Unknown (Unknown)\nDistribution suspension status: Currently suspended (Ongoing)\nNumber of personal data records: Under review (Unknown)","jir_category":"","jir_hashtags":"#PersonalDataLeak, #NoticeNotDelayOrCorrection, #NonIRDisclosure","jir_key_figures":"Number of affected records: Under review\nPersonal data: Name, email address, date of birth, gender, region\nDistribution suspension: Currently suspended","jir_meta_title":"Gyet Co., Ltd. Notice of Potential Information Leakage Due to Unauthorized Access to Blast Mail\uff5c2026","jir_meta_description":"An unauthorized access occurred in the Mac-House email distribution service operated by Gyet Co., Ltd., resulting in a potential personal data leakage. This notice explains the current response, the ongoing review of the scope of impact, and future response plans.","jir_og_title":"Notice of Potential Unauthorized Access to Blast Mail\uff5c2026","jir_og_description":"A summary notice of the current situation and responses regarding a potential personal data leakage through the Mac-House distribution service.","jir_og_image_url":"\/assets\/og\/company-general_ir.jpg","jir_chart_data_collection":"[]","ir_related_company":60317,"ir_release_date":"","ir_type":"","ir_is_new":false,"ir_document_url":"","jir_ir_type":"general_ir","footnotes":""},"sector":[],"importance":[],"class_list":["post-134065","ir_release","type-ir_release","status-publish","hentry"],"yoast_head":"\n