アセンション、ランサムウェア攻撃で560万人の医療情報流出
米医療機関アセンションは2024年5月にランサムウェア攻撃を受け、診療業務や電子カルテへのアクセスに支障が生じ、一部の緊急性のない処置を中止した。従業員が誤って悪意あるファイルをダウンロードしたことと、Black Bastaのランサムウェア攻撃によるデータ流出が確認された。一部地域では6月に電子カルテへのアクセスが復旧し、その後560万人の医療情報が流出したことが確認された。2025年9月には関連する集団訴訟の継続を認める裁判所の判断が出た。
主な情報
- 被害組織
- アセンション
- 事故の種類
- ランサムウェア
- 発生・認知日
- 未確認
- 被害規模
- 560万人の医療情報流出と診療業務への支障
- 原因・手口
- 従業員の誤りによる悪意あるファイルのダウンロードとBlack Bastaのランサムウェア攻撃
- 地域
- アメリカ合衆国
情報が漏れたらこうしてください
漏えい項目健康・医療情報
- この事故に触れて補償・返金・漏えい確認を案内する SMS・電話・メールのリンクは押さないでください。確認は組織の公式サイトやアプリで直接行ってください。
経過
- アセンションのサイバー攻撃調査と病院運営への支障が明らかになった。
- サイバー攻撃の影響で一部の緊急性のない処置が中止された。
- アセンションが一部地域で電子カルテへのアクセスを復旧した。
- Black Bastaの攻撃によるデータ流出と、従業員が誤って悪意あるファイルをダウンロードしたことが確認された。
- ランサムウェア攻撃で560万人の医療情報が窃取されたことが確認された。
- 裁判所がアセンションへのサイバー攻撃をめぐる集団訴訟の継続を認めた。
この事故で同時に被害を受けた組織
アセンションへの攻撃の余波受けたプロビデンス病院、医療記録を復旧
↳ アセンションの事故から広がった二次被害 · 元の事故を見る被害: 電子カルテシステムの障害
アセンションへのサイバー攻撃の後、USAヘルス・プロビデンス病院の電子カルテシステムに障害が発生した。同病院の電子カルテシステムはその後復旧した。
Fox 10 Newsの記事を読む ↗
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アセンションのその他の事件
アセンション・ヘルスの2024年情報流出、患者による訴訟が進展
アセンション・ヘルスで2024年に情報流出事故が発生した。被害を受けた患者らが起こした訴訟は手続きが進展し、具体的な流出規模と事故対応措置は確認されていない。
Bloomberg Law Newsの記事を読む ↗アセンション・ヘルス、データ流出を発表
アセンション・ヘルスがデータ流出を発表した。事故の発生時期、流出した情報の種類、被害規模および具体的な対応措置は確認されていない。
NBC 5 Chicagoの記事を読む ↗アセンションの元取引先で侵害、患者43万7329人の情報流出
43.7万被害: 患者43万7329人の個人情報・社会保障番号・診療および保険情報
アセンションの元取引先で発生した情報流出事故により、患者43万7329人の情報が露出した。流出データには個人情報、社会保障番号、診療・保険情報が含まれ、取引先のソフトウェア脆弱性の悪用が原因とされた。アセンションは被害患者に流出を通知した。
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