I have just spoken with LG support and can add some more information.

There is no software that can provide any internet security while using the internet from your TV. I quizzed him and asked if he'd do his banking on the TV and he said that he would NEVER do anything sensitive using the TV, never log in websites, use passwords or do anything that you wouldn't want a hacker to see.

Not good enough in my view!! So, be very, very careful what you use your TV for as anyone could be looking, watching and tracking.