ユナイテッドヘルス、ランサムウェアで医療サービス障害・大規模流出

主な情報

被害組織

ユナイテッドヘルス

事故の種類

ランサムウェア

発生・認知日

未確認

被害規模

1億9270万人の情報侵害および処方薬注文・医療費請求・支払いサービスの障害

原因・手口

BlackCatランサムウェア攻撃

地域

アメリカ合衆国

経過

1. 2024-02-29ユナイテッドヘルスが技術部門へのハッキングの背後にBlackCatランサムウェア組織がいると名指しした。
2. 2024-03-04ユナイテッドヘルスがサイバー攻撃後に限定的な金融支援を提供した。
3. 2024-03-08ユナイテッドヘルスが医療費の請求・支払いサービスを3月中旬に復旧させる計画を明らかにした。
4. 2024-04-22ユナイテッドヘルスが多数の米国人のデータが窃取された可能性を明らかにした。
5. 2025-08-14米保健当局のウェブサイトで、技術部門へのハッキングの影響人数が1億9270万人と確認された。
6. 2025-12-22情報流出に関する医療機関および患者によるユナイテッドヘルスへの訴訟が続いた。

関連報道 34件

• US pharmacy outage triggered by 'Blackcat' ransomware at UnitedHealth unit, sources sayReuters · 2024-02-26
• A Cyberattack on a UnitedHealth Unit Disrupts Prescription Drug Orders (Published 2024)The New York Times · 2024-02-26
• UnitedHealth says 'Blackcat' ransomware group behind hack at tech unitReuters · 2024-02-29
• U.S. prescription drug market in disarray as ransomware gang attacksThe Washington Post · 2024-03-01
• UHG Offers Limited Financial Assistance After CyberattackLeadingAge · 2024-03-04
• UnitedHealth to restore hacked medical claims and payment services mid-MarchReuters · 2024-03-08
• With Cyberattack Fix Weeks Away, Health Providers Slam United (Published 2024)The New York Times · 2024-03-08
• UnitedHealth could take months to fully recover from hackReuters · 2024-03-08
• Health industry struggles to recover from cyberattack on a unit of UnitedHealthNPR · 2024-03-09
• UnitedHealth services returning after February cyberattackNorthwest Arkansas Democrat-Gazette · 2024-03-09
• Lawsuit filed on behalf of 'millions' of patients impacted by UnitedHealth data breachkare11.com · 2024-03-13
• Patients, providers still feeling the effects of cyberattack on UnitedHealth GroupCBS News · 2024-03-14
• UnitedHealth Group has paid more than $2 billion to providers following cyberattackCNBC · 2024-03-18
• UnitedHealth hack takes toll on healthcare providers to the nation's poorReuters · 2024-03-20
• UnitedHealth unit will start processing $14 billion medical claims backlog after hackReuters · 2024-03-22
• Oversight ranking member Raskin demands answers in UnitedHealth cyberattackThe Hill · 2024-03-25
• UnitedHealth Group has paid more than $3 billion to providers following cyberattackCNBC · 2024-03-27
• UnitedHealth says hackers possibly stole large number of Americans' dataReuters · 2024-04-22
• UnitedHealth Group looking to bounce back after cyberattackKATV · 2024-04-23
• Senators Slam UnitedHealth’s C.E.O. Over Cyberattack (Published 2024)The New York Times · 2024-05-01
• Community health centers still bogged down by red tape after UnitedHealth hackReuters · 2024-06-05
• US health dept says UnitedHealth can notify patients of data breachReuters · 2024-06-12
• UnitedHealth’s cyberattack response costs to surpass $2.3B this yearCybersecurity Dive · 2024-07-17
• UnitedHealth Group says cyberattack impact tops $2B, but profits remain strongChief Healthcare Executive · 2024-07-17
• UnitedHealth has begun informing patients affected by major data breachStar Tribune · 2024-08-14
• UnitedHealth tech unit's rivals say new, post-hack customers are stayingReuters · 2024-09-19
• Hack at UnitedHealth's tech unit impacted 100 mln people, US health dept saysReuters · 2024-10-25
• UnitedHealth Group names new CISO 8 months after massive ransomware attackCybersecurity Dive · 2024-10-30
• UnitedHealth cyberattack and more: The 10 biggest health data breaches of 2024Chief Healthcare Executive · 2025-01-03
• The complete story of the 2024 ransomware attack on UnitedHealthKaspersky · 2025-02-20
• UnitedHealth’s Move to End Cyberattack Loan Lifeline Upsets Medical Providers (Published 2025)The New York Times · 2025-05-05
• Hack at UnitedHealth's tech unit impacted 192.7 million people, US health dept website showsReuters · 2025-08-14
• Ransomware attack at DaVita impacted 2.7 million people, US health dept website showsReuters · 2025-08-21
• UnitedHealth Stuck With Provider, Patient Suits Over Data BreachBloomberg Law News · 2025-12-22