From zdnet.com
Botnet operators are abusing VPN servers from VPN provider Powerhouse Management as a way to bounce and amplify junk traffic part of DDoS attacks.
This new DDoS vector has been discovered and documented by a security researcher who goes online as Phenomite, who shared his findings with ZDNet last week.
The researcher said the root cause of this new DDoS vector is a yet-to-be-identified service that runs on UDP port 20811 on Powerhouse VPN servers.