The first distributed denial of service (DDoS) attacks occurred ,more than 11 years ago, in the summer of 1999. These were relatively small attack networks by today’s standards, ranging from several hundred to more than two thousand computer.
University security experts were the first to discover the threat of denial of service attacks hiding in the university computer systems. For example, David Dittrich of the University of Washington discovered denial of service program files stored on the university servers’ months before the first widely publicized attacks on E-ecommerce web sites.
A denial of service attack threatening to prevent the user having access to the service. They attempts to flood a computer network. Thereby preventing legitimate network traffic.
Hackers later used such unsecured university systems as “zombie” machines to help launch massive distributed denial of service (DDoS) against Yahoo!, eBay, Amazon, and other popular web sits.
The attack, which would typically come from several compromised machine at once, would consumed network bandwidth and use up processing unit cycles on the target machine.
The concern would be what is called distributed denial of service attack where take a lot of compromised end systems and flood a server with the intent of making many request or delivering so much traffic to it that it falls off the network.
Denial of Service
