Change Healthcare Data Breach Letter 2024 Date. 21, 2024, we discovered a threat actor gained access to one of our change healthcare environments,” unitedhealth group said. 21, 2024, a cybercriminal group calling themselves alphv or blackcat deployed a ransomware attack inside change healthcare's information technology.

On july 30, 2024, the day that ocr added change healthcare to its data breach portal, ocr updated its change healthcare cybersecurity incident webpage to provide an. Change healthcare has started sending out data breach notifications after a cyberattack against the payments processor earlier this year compromised information like.