UnitedHealth, the nation's fifth-largest company by revenue, recently faced a significant cyberattack in February that exploited remote-access software, leading to a ransomware attack. This incident forced some doctors to use personal savings to maintain operations. The attack, which saw hackers inside the network for nine days, has drawn attention from lawmakers and the public, with concerns about the company's size and its impact on the U.S. economy. CEO Andrew Witty, during a Senate hearing, addressed these issues and the company's response to the cyberattack, and was expected to offer an apology. Despite the challenges, UnitedHealth plans to acquire Steward's physician group, amid ongoing DOJ antitrust investigations and rising health care costs. Protesters confronted CEO Andrew Witty after the Senate hearing, criticizing the company's actions.