The Samsung TV attack seems rather lame. The attack apparently has to be installed via a USB device, which means somebody has to physically reach the TV. If you can get that far, there are other ways to plant a bug. The documents don't indicate they've been able to install it remotely. Looking into remote update was on the to-do list.

There's little interesting technical detail in any of this. It looks like stuff that would be classified CONFIDENTIAL; it's mildly embarrassing, but doesn't give much away.