DDOS

A distributed denial of service is an attack on a web server usually executed by a botnet. The most classic and outdated method is by typing in ping www.urbandictionary.com -t -l 65500 in command prompt to send useless noise to UD's server. In theory, if a large enough botnet did this, it would generate enough noise to clog the bandwidth of the server, denying the webservice offered by said server (preventing normal users from accessing the webpage). However, modern DDOS protections filter out said noise, so various scripts and programs will spam the webserver (www.urbandictionary.com) with requests for the html data, achieving the same goal of clogging the bandwidth. A more refined approach is through DNS reflection, in which a DNS server is tricked into using its large bandwidth to send random data from the service that it offers to the target IP. A bad method used by anonymous is the HOIC or LOIC to attack the server directly, it's a bad choice because each member of the attack must consent to said attack through a fancy graphical interface, so you can't have a botnet do it for you. A DDOS is highly illegal, so don't try this at home kids