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  <blog_title>TT Incidents Log</blog_title>
  <blog_url>https://incidents.hatenablog.com/</blog_url>
  <categories>
    <anon>不正アクセス被害: Navia</anon>
    <anon>**不正アクセス / サイバー攻撃 / Cyber Attack</anon>
  </categories>
  <description>【要点】 ◎Naviaへの侵害で260万人超の健康保険情報や社会保障番号などが盗まれた。影響は2018年分まで及び、従業員給付管理業者のリスクが改めて浮き彫りになった (The Record)</description>
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  <provider_name>Hatena Blog</provider_name>
  <provider_url>https://hatena.blog</provider_url>
  <published>2026-04-08 20:13:23</published>
  <title>Health plan information for over 2.6 million stolen from third-party admin Navia</title>
  <type>rich</type>
  <url>https://incidents.hatenablog.com/entry/2026/04/08/201323</url>
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