https://techcrunch.com/2019/12/01/fbi-smart-tv-security/
Beyond the risk that your TV manufacturer and app developers may be listening and watching you, that television can also be a gateway for hackers to come into your home. A bad cyber actor may not be able to access your locked-down computer directly, but it is possible that your unsecured TV can give him or her an easy way in the backdoor through your router
arguably one of the bigger issues that should cause as much if not greater concerns are how much tracking data is collected on smart TV owners.
collect tons of information about what users are watching in order to help advertisers better target ads against their viewers
The FBI recommends placing black tape over an unused smart TV camera, keeping your smart TV up-to-date with the latest patches and fixes
As convenient as it might be, the most secure smart TV might be one that isn’t connected to the internet at all.