Your TV Is Now a Computer, but Not in a Good Way

I switched on my Samsung Smart TV to watch the Warriors game, and after about 20 seconds, the CBS News app switched itself on for a few seconds in a small rectangle in the upper left corner. Then my TV crashed, which is a thing TVs can do now, and the screen went dark. This was particularly confusing because I'd never watched the CBS News app. I'd never installed the app, nor did I even know it was on my TV. I tried the obvious things.