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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.
It might be best to connect it to a network that just blackholes the traffic so it doesn't go hunting for some open wifi.
If it's like a lot of other devices, it will realize that it can't get to "The Internet" through that network, and might disconnect. It's possible it will then look for another option, and might see an open network and use it.