This article discusses yet another series of DDOS attacks targeting well known websites.  Based on the article, these DDOS attacks are an example of a hacking group trying to validate skills and work toward larger attacks which will in turn inspire other attacks against new targets by other new hacking groups.  This is a systemic problem that will continue to grow and plague businesses and organizations worldwide.

It is important to consider the potential damage that can be caused by a DDOS attack and how your organization would remediate or mitigate such an attack.

https://threatpost.com/wikipedia-world-of-warcraft-ddos-attacks/148121/