A distributed-denial-of-service, or DDoS, attack is the bombardment of simultaneous data requests to a central server. The attacker generates these requests from multiple compromised systems (installed with bot).DDoS attacks overwhelm servers or networks by flooding them with internet traffic. Once a botnet is established, an attacker can instruct each bot to send a request to the targeted IP address, creating a jam of requests for the targeted server. The result is like traffic clogging a highway – legitimate traffic to the attacked IP address is denied access. This type of attack can be used to take a website down.The ultimate goal is to crash the target’s system and disrupt its business.
