Slow POST Attack

The Slow POST Attack, also known as RUDY (R U Dead Yet) works by sending HTTP POST requests to a targeted server. These requests include a very large value in the Content-Length field, signaling to the server that a significant amount of data is forthcoming. However, the attacker transmits only a minimal amount of data (e.g., a single byte). This process is then repeated, with the attacker sending small data packets at random intervals. With this strategy, the attacker can consume server resources using a relatively small amount of traffic. Due to the server’s expectation of receiving a large data volume based on the high Content-Length value, it keeps the connection open indefinitely. This overwhelm the server resources and prevent legitimate clients to connect.