To carry out an attack like this on a large scale, a Botnet is used. This is a network of infected computers by Malware, for example. The hacker can control these computers from a central point and have them execute a certain command. Among other things, they can then visit a website repeatedly making it unusable for the end user. DDoS attacks have a major impact on businesses and users. Therefore, harsh action is taken when the hacker is identified.