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The complete story of the 2024 ransomware attack on UnitedHealth
- UnitedHealth Group, a major health-insurance company, was hit by a ransomware attack in 2024, causing significant disruptions.
- The attack targeted Change Healthcare, a platform acquired by UnitedHealth, impacting insurance claims processing.
- Recovery efforts took months, with some systems remaining partially available even a year later.
- The attackers bypassed two-factor authentication on the Citrix portal to initiate the attack.
- UnitedHealth Group paid a $22 million ransom to the BlackCat/ALPHV gang, leading to further complications.
- The cybercriminals claimed to have stolen extensive sensitive data, including medical records and financial documents.
- The financial losses for UnitedHealth from the breach were estimated at over $3 billion by the end of the year.
- Initial estimates of affected individuals at 100 million later rose to 190 million, revealing the massive impact of the breach.
- Lessons from the attack include the critical need for two-factor authentication and robust cybersecurity practices.
- Companies are advised to implement multilayered defenses, raise employee awareness, and engage external threat-hunting services.
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