Botnets (network of bots / zombie computer systems) are computers infected by worms or Trojans and bought out surreptitiously by hackers and brought into systems to deliver spam, more viruses, or launch denial of solution attacks. Botnet is a jargon term for a collection of software robots, or bots, which operate autonomously. This could easily also relate to the community of computers using distributed computing software.Even though the term "botnet" may be used to relate to any selection of bots, eg IRC bots, the phrase is usually used to reference an accumulation compromised machines running programs (usually called worms, Trojan horses, or backdoors) under a standard command and control infrastructure. A botnet's originator can get a handle on the team remotely, frequently through an easy method like IRC, and usually for nefarious functions. Specific programs manifest as IRC "bots". The command and control happens via an IRC host or a specific channel on a public IRC network. A bot typically runs hidden, and complies aided by the RFC 1459 (IRC) standard. Typically, the perpetrator of botnet features compromised a number of systems using different resources (exploits, buffer overflows, also others; see additionally RPC). Newer bots can instantly scan their particular environment and propagate themselves utilizing vulnerabilities and poor passwords. Generally speaking, the greater vulnerabilities a bot can scan and propagate through, the more valuable it becomes to a botnet owner community A pc that has been contaminated and absorbed by a hacker by utilizing a virus/trojan/malware.