Plex Media servers actively abused to amplify DDoS attacks By 10:54 AM Plex Media Server systems are actively being abused by DDoS-for-hire services as a UDP reflection/amplification vector in Distributed Denial of Service (DDoS) attacks. Plex Media Server provides users with a streaming system compatible with the Windows, macOS, Linux, and FreeBSD platforms, as well as network-attached storage (NAS) devices, Docker containers, and more. Netscout says that amplified PMSSDP DDoS attacks observed since November 2020 have been abusing UDP/32414 SSDP HTTP/U responses from exposed broadband Internet access routers and redirected towards attackers' targets. This junk traffic reflected onto victims' servers is sourced from Simple Service Discovery Protocol (SSDP) probes sent by Plex through the G’Day Mate (GDM) protocol for local network service discovery.