This text, excerpted from a Wikipedia article, provides a comprehensive overview of Comcast Corporation, detailing its evolution from American Cable Systems to a multinational telecommunications, media, and entertainment conglomerate. The source outlines the company's extensive history of mergers and acquisitions, including its major purchase of NBCUniversal and the subsequent acquisition of Sky Group, while also mentioning failed bids for companies like Time Warner Cable and Warner Bros. Discovery. Furthermore, the text addresses Comcast’s corporate structure, various divisions (such as Xfinity, NBCUniversal, and the planned spin-off Versant), and significant financial performance indicators. Critically, the overview also includes sections on cybersecurity incidents and numerous controversies and criticisms regarding customer service, competition, and political lobbying.