LY Corporation

ly_title=Information and Progress on Measures to Prevent a Recurrence of Information Leakage Due to Unauthorized Access ly_desc=This page provides LY Corporation's information about [Information and Progress on Measures to Prevent a Recurrence]. ly_breadcrumbs=[Privacy&Security](https://www.lycorp.co.jp/en/privacy-security/)| Information and Progress on Measures to Prevent a Recurrence of Information Leakage Due to Unauthorized Access </mt:SetVars> <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <meta name="format-detection" content="telephone=no">  <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-NJPSPSD5');</script>  <title>LY Corporation</title> <link rel="icon" href="/assets/images/favicon.ico"> <link rel="apple-touch-icon" href="/assets/images/apple-touch-icon.png"> <link rel="stylesheet" href="/assets/css/style.css"> <link rel="canonical" href="https://www.lycorp.co.jp/en/privacy-security/recurrence-prevention/"> <meta name="description" content=""> <meta name="keywords" content="Yahoo!, ヤフー,やふー,LINE,ライン,らいん,Zホールディングス,ZHD"> <meta name="pubdate" content="Wed, 30 Aug 2023 14:27:10 +0900"> <meta property="og:locale" content="ja_JP"> <meta property="og:type" content="website"> <meta property="og:title" content="LY Corporation"> <meta property="og:description" content=""> <meta property="og:url" content="https://www.lycorp.co.jp/en/privacy-security/recurrence-prevention/"> <meta property="og:site_name" content="LY Corporation"> <meta property="og:image" content="https://www.lycorp.co.jp/assets/images/ogp_ly_en_bk_1200_628.png"> <meta property="og:image:width" content="1200"> <meta property="og:image:height" content="630"> <meta name="twitter:card" content="summary_large_image"> </head> <body>  <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-NJPSPSD5" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>  <script src="/en/en_header.js"></script> <div class="global-container"> <div class="body-container"> <div class="body-inner search-target"> <h1>Information and Progress on Measures to Prevent a Recurrence of Information Leakage Due to Unauthorized Access</h1> <br> <p class="c-body"> LY Corporation received guidance from the Ministry of Internal Affairs and Communications (MIC) on March 5, 2024, and a request for reports, etc. and recommendation from the Personal Information Protection Commission (PPC) on March 28, 2024 in regard to the incident of an information leakage due to unauthorized access.<br> <br> Once again, we sincerely apologize to our users and stakeholders for any concern or inconvenience this may have caused. We take this guidance seriously and we will endeavor to prevent recurrence. <br> <div class="c-vertical-link-list no-frame mt20"> <h5 class="c-index-h5">Details on the administrative guidance/request for a report, etc. and recommendation</h5> <div class="c-vertical-link-list no-frame"> <ul> <li><a class="c-icon-link outbound" href="https://www.soumu.go.jp/menu_news/s-news/01kiban18_01000224.html" rel="noopener" target="_blank" style="line-height: 25px;">Administrative Guidance for LY Corporation on Protecting the Secrecy of Communications and Ensuring Rigorous Cybersecurity Measures (Japanese only)</a></li> <li><a class="c-icon-link" href="https://www.lycorp.co.jp/en/news/announcements/007779/" rel="noopener" style="line-height: 25px;">Regarding Administrative Guidance Issued by the Ministry of Internal Affairs and Communications (press release dated March 5, 2024)</a></li> <li><a class="c-icon-link outbound" href="https://www.ppc.go.jp/news/press/2024/240328/" rel="noopener" target="_blank" style="line-height: 25px;">Administrative Guidance from the Personal Information Protection Commission (Japanese only)</a></li> <li><a class="c-icon-link" href="https://www.lycorp.co.jp/en/news/announcements/007857/" rel="noopener" style="line-height: 25px;">Notice Regarding the Request for a Report, Etc. and Recommendation on Unauthorized Access Received from the Personal Information Protection Commission of Japan (press release dated March 28, 2024)</a></li> </ul> </div> </div> </p> <h2 class="c-index-h2">Recurrence Prevention Measures and Progress</h2> <p class="c-body"> Please visit the following pages for information on the outline and progress of recurrence prevention measures we are undertaking based on the guidance from MIC and a request for reports, etc. and recommendation from PPC. </p> <ul class="c-col-set-2"> <li class="c-col"> <a href="mic/" class="c-link-panel-text">Recurrence Prevention Measures Based on MIC’s Guidance</a> </li> <li class="c-col"> <a href="ppc/" class="c-link-panel-text">Recurrence Prevention Measures Based on PPC’s Request for Reports, Etc. and Recommendation</a> </li> </ul> <h2 class="c-index-h2">Press Releases</h2> <ul class="c-article-list-topics"> <li> <a href="https://www.lycorp.co.jp/en/news/announcements/001003/"> <time datetime="2023-11-27">November 27, 2023</time> <p>Notice and Apology Regarding Information Leakage Due to Unauthorized Access</p> </a> </li> <li> <a href="https://www.lycorp.co.jp/en/news/announcements/001168/"> <time datetime="2023-12-27">December 27, 2023</time> <p>Notice and Apology Regarding Information Leakage Due to Unauthorized Access (updated on December 27)</p> </a> </li> <li> <a href="https://www.lycorp.co.jp/en/news/announcements/007715/"> <time datetime="2024-2-14">February 14, 2024</time> <p>Notice and Apology Regarding Information Leakage Due to Unauthorized Access (updated February 14, 2024)</p> </a> </li> <li> <a href="https://www.lycorp.co.jp/en/news/announcements/007714/"> <time datetime="2024-2-14">February 14, 2024</time> <p>Notice and Apology Regarding Employee Information Leakage Due to Unauthorized Access Using Two Subcontractor Accounts</p> </a> </li> <li> <a href="https://www.lycorp.co.jp/en/news/announcements/007713/"> <time datetime="2024-2-14">February 14, 2024</time> <p>Notice on Countermeasures Being Taken to Prevent Recurrence of Unauthorized Access and Personal Information Leakage</p> </a> </li> <li> <a href="https://www.lycorp.co.jp/en/news/announcements/007779/"> <time datetime="2024-3-5">March 5, 2024</time> <p>Regarding administrative guidance issued by the Ministry of Internal Affairs and Communications</p> </a> </li> <li> <a href="https://www.lycorp.co.jp/en/news/announcements/007857/"> <time datetime="2024-3-28">March 28, 2024</time> <p>Notice Regarding the Request for a Report, Etc. and Recommendation on Unauthorized Access Received from the Personal Information Protection Commission of Japan</p> </a> </li> <li> <a href="https://www.lycorp.co.jp/en/news/announcements/007865/"> <time datetime="2024-4-1">April 1, 2024</time> <p>Submission of Report to Ministry of Internal Affairs and Communications and Opening of Dedicated Incident Page</p> </a> </li> <li> <a href="https://www.lycorp.co.jp/en/news/announcements/008043/"> <time datetime="2024-4-16">April 16, 2024</time> <p>Regarding Administrative Guidance Issued by the Ministry of Internal Affairs and Communications</p> </a> </li> <li> <a href="https://www.lycorp.co.jp/en/news/announcements/008284/"> <time datetime="2024-4-26">April 26, 2024</time> <p>Submission of Report to the Personal Information Protection Commission of Japan</p> </a> </li> <li> <a href="https://www.lycorp.co.jp/en/news/announcements/008729/"> <time datetime="2024-6-28">June 28, 2024</time> <p>Submission of Report to the Personal Information Protection Commission of Japan Dated June 28, 2024</p> </a> </li> <li> <a href="https://www.lycorp.co.jp/en/news/announcements/008740/"> <time datetime="2024-6-28">July 1, 2024</time> <p>Submission of Report to the Ministry of Internal Affairs and Communications Dated July 1, 2024</p> </a> </li> <li> <a href="https://www.lycorp.co.jp/en/news/announcements/009359/"> <time datetime="2024-9-30">September 30, 2024</time> <p>Submission of Report to the Ministry of Internal Affairs and Communications Dated September 30, 2024</p> </a> </li> <li> <a href="https://www.lycorp.co.jp/en/news/announcements/009360/"> <time datetime="2024-9-30">September 30, 2024</time> <p>Submission of Report to the Personal Information Protection Commission of Japan Dated September 30, 2024</p> </a> </li> </ul> <h2 class="c-index-h2">Inquiries</h2> <p class="c-body"> For inquiries regarding this matter, please contact us using the inquiry form below.<br> Link: <a href="https://support.yahoo-net.jp/formly/s/dirlycorporateinfo" class="c-link" target="_blank" rel="noopener">https://support.yahoo-net.jp/formly/s/dirlycorporateinfo</a> </p> </div> </div> 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