‘Bot,’ is a slang term for ‘robot.’ In this case the term is used to describe a program or piece of software created to perform a task automatically and on command. ‘Malware’ is software designed to infiltrate (infect) a computer system without the owner’s consent. Bots are often included in malware. When a computer has been infected, it becomes by a bot, or Zombie, in that it’s now under the control of its master, rather than the owner of the computer.