VPN service Hola used to disrupt operations of 4Chan, according to reports. Hola’s VPN service uses the Luminati network, an anonymity network similar to Tor. Luminati was used as a botnet to overflow the site’s network with requests. As a result, 9 millions IPs were banned from accessing 4Chan. This is not the first time 4Chan has been a victim of a DDoS attack. In January 2015, the site was rendered unavailable after Lizard Squad took advantage of their commercially-available Lizard Stresser tool to put down the site.”]
Source: https://www.bitdefender.com/blog/hotforsecurity/hola-vpn-allegedly-used-in-ddos-against-4chan/