Anonymity is one advantage of the DrDoS attack method. In a DrDoS attack, the target site appears to be attacked by the victim servers, not the actual attacker. This approach is called spoofing. It involves faking the source of the request.
Amplification is another advantage of the DrDoS attack method. By involving multiple victim servers, an attacker’s initial request yields a response that is larger than what was sent, thus increasing the attack bandwidth, making it more likely to cause a denial of service outage.