A large number of DDoS-for-hire platforms have appeared in China in the past six months. Cisco Talos and Umbrella teams identified 32 platforms for Chinese-speaking users, of which 32 used a nearly identical backend. All featured an admin panel built on a free Bootstrap theme offered by design firm PixelCave, used the same (default) background images, and providing the same features. Most platforms use a similar UI UI and code-wise, the vast majority of the backend was the same on all 32 platforms.
Source: https://www.bleepingcomputer.com/news/security/tsunami-of-ddos-for-hire-platforms-coming-from-the-east/