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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.
Me too with my TV. But reading more detailed comments here, it's more complicated and nuanced than just "if it has a direct Internet connection it will get up to shenanigans". Sounds like this device is using HDMI to manipulate Windows (install drivers etc) and piggyback off the Windows machine's Internet connection. But I'm assuming if it's not plugged into a Windows PC directly it might not be a problem.