0 a large group of devices connected to the internet that are all running bots (= computer programs that work automatically), that can be used to send spam (= unwanted electronic messages), or attack other computers and cause them to stop working correctly:
They reported a bot army of over 300,000 infected machines sending out alarming amounts of pharmaceutical spam.
The tool simplifies the process of building bot armies controlled by specially created Twitter accounts.
A bot army can be utilized for a number of dishonest purposes, chief amongst them misrepresenting public sentiment about whichever topics the controller has interest in.
