A Fast Flux Network is a network of compromised computers and some public DNS records that change frequently. As a result, the IP address associated with the corresponding domain name changes frequently. This technique is often used by the attackers to hide their malicious websites from detection. Botnets are large groups of compromised machines (bots) used by miscreants for the most illegal activities (e.g., sending spam emails, denial-of-service attacks, phishing and other web scams). To protect the identity and to maximise the availability of the core components of their business, miscreants have recently started to use fast-flux service networks, large groups of bots acting as front-end proxies to these components. Motivated by the conviction that prompt detection and monitoring of these networks is an essential step to contrast the problem posed by botnets, Attackers typically compromise one or more victim computer systems with malware and exploit those to establish a fraud
