botnet

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bot·net

 (bŏt′nĕt′)
n.
A network of maliciously installed bots running on multiple computers.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

botnet

(ˈbɒtˌnɛt)
n
(Telecommunications) (sometimes with a capital) a network of computers infected by a program that communicates with its creator in order to send unsolicited emails, attack websites, etc
[C20: from (ro)bot + net(work)]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
The quarterly report, which unbiasedly evaluates thousands of worldwide DDoS attacks, attributes the dramatic rise to IoT botnets and Satori malware exploits, which is a variant of the notorious Mirai malware.
Botnets are large volumes of distributed networked computers and devices that have been taken over by a cybercriminal.
Botnets -- nets of compromised devices used in criminal activity -- are harnessed by criminals to spread malware and facilitate DDoS and spam attacks.
Although the overall number of DDoS attacks fell 12 percent compared to the same period last year, a new class of powerful botnets may appear from wider DNSSEC adoption.
The hospitality industry suffered as the biggest target of fraudulent credential attacks, with 82 percent of their login attempts being from malicious botnets.
Combined, these devices form powerful bot networks (botnets) that can spread malware, generate spam, and commit other types of crime and fraud online.
It is reportedly on track to become one of the largest botnets in the world.