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LG smart TVs caught logging audio with screen off and snooping on local devices
(www.notebookcheck.net)
This is a most excellent place for technology news and articles.
I think you're misunderstanding what's happening. The LG TV isn't directly using the Windows internet connection. It's taking advantage of Windows Update to have Windows itself install malware as a driver update for the screen.
Which I think is actually worse, because it shows that Microsoft is complicit in this nonsense.