Botnet (bot network)
|Botnet (bot network)||
Short for robot network, a botnet is a network of hijacked computers controlled remotely by a hacker. The hacker can use the network to send spam and launch Denial of Service (DoS) attacks, and may rent the network to other cybercriminals. A single computer in a botnet can automatically send thousands of spam messages per day. The most common spam messages come from zombie computers.