Starting reading:
Oct 2016 - Mirai botnet: http://mashable.com/2016/10/21/how-did-dyn-attack-happen/#TFGX0aiejmqI
Oct 2016 - Mirai botnet: https://www.theguardian.com/technology/2016/oct/26/ddos-attack-dyn-mirai-botnet
Oct 2016 - Mirai botnet: https://www.nytimes.com/2016/10/23/us/politics/a-new-era-of-internet-attacks-powered-by-everyday-devices.html
Apr 2017 - Bank heist: https://www.wired.com/2017/04/hackers-hijacked-banks-entire-online-operation/
Aug 2007 - Estonia attack: https://www.wired.com/2007/08/ff-estonia/
Basics - https://www.wired.com/story/what-is-dns-hijacking/