A Large Payload Post is a class of HTTP DDoS attack where the attacker abuses XML encoding used by webservers. In this type of DDoS attack, a webserver is sent a data structure encoded in XML, which the server then attempts to decode, but is compelled to use an excessive amount of memory, thus overwhelming the system and crashing the service. These types of DDoS attacks are also referred to as “Oversize Payload Attacks” or “Jumbo Payload Attacks."

Large Payload Post DDoS Attack