There's a bit of exquisite irony in the fact that just yesterday an article on the Dyn blog was:

Recent IoT-based Attacks: What Is the Impact On Managed DNS Operators? - http://hub.dyn.com/traffic-management/recent-iot-based-attac...

It's a good piece about how IoT-based DDoS attacks are carried out. And now Dyn has the answer...

HN thread about that article at: https://news.ycombinator.com/item?id=12764650