This info concerning the Dyn attack was to be expected.  Attacks associated with large IoT botnet farms are only going to increase in the immediate future given the effectiveness demonstrated in the DDOS attack against Brian Krebs.  For the foreseeable future, this will be a defensive struggle simply because patching options for the IoT devices in question are largely non-existent.

https://threatpost.com/mirai-fueled-iot-botnet-behind-ddos-attacks-on-dns-providers/121475/