Cybersecurity bounty hunter says Samsung TVs use AI to record audio and screenshots for ads
(www.tomshardware.com)
I recall reading that some SmartTVs will attempt to connect to open wireless networks, fully in the background, to set up a connection for delivering telemetry and downloading ads.
If that's accurate, then any neighbour running a guest network could make you vulnerable.
I would be interested to hear if anyone knows if this is an urban legend or legitimate concern.