It looks like the internet of things just bit us on the bum with a serious denial of service attack on 16 October 2016.
Should we be worried? YES!
The problem is that most of us have a 20th century mindset when it comes to our things. Want to record TV? You probably have PVR, but you think of it in the same way you did your old VHS machine. But your PVR is probably connected to the internet. So it can be hacked. This is the problem, much of the internet of things is not hack proof, nor can much of it be made hack proof. Some devices have passwords hard coded into the device and they can not be changed.
Expect to see more of this in the future. Meanwhile check your gadgets, it could be that your new smart refrigerator is doing stuff apart from keeping your food cold.