botnet

Definitions

1. A collection of compromised computers that is gradually built up and then unleashed as a DDOS attack or used to send very large quantities of spam.
   Internet
2. spyware

Equivalents

Examples

“Then they blacklisted addresses used by spammers. In response, senders started using botnets (networks of otherwise innocent computers).”

“Google Chrome is botnet, use⟳ Firefox instead”

CEFR level