Question

what is Botnet? explain

Answer 1

a network of private computers infected with malicious software and controlled as a group without the owners' knowledge, e.g. to send spam.

Answer 2

A botnet is a group of computers connected in a coordinated fashion for malicious purposes. Each computer in a botnet is called a bot. These bots form a network of compromised computers, which is controlled by a third party and used to transmit malware or spam, or to launch attacks.