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How the ransomware attack at Change Healthcare went down: A timeline
A hack on UnitedHealth-owned tech giant Change Healthcare likely stands as one of the biggest data breaches of U.S. medical data in history.
Months after the February data breach, a “substantial proportion of people living in America” are receiving notice by mail that their personal and health information was stolen by cybercriminals during the cyberattack on Change Healthcare. The status page on Change Healthcare’s website was flooded with outage notifications affecting every part of its business, and later that day the company confirmed it was “experiencing a network interruption related to a cyber security issue.” Clearly something had gone very wrong. New details about the hack emerged in the state’s complaint, including that the ALPHV hackers initially broke in using the stolen username and password of a “low-level customer support employee,” which wasn’t protected with multi-factor authentication.
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