Grum botnet

The Grum botnet was a significant network of infected computers (or "bots") that was primarily used to send spam emails. It operated from at least 2008 until it was largely dismantled in 2012. Grum's infrastructure was notable for its decentralized approach, utilizing servers in various locations worldwide to evade detection and suppression efforts. The botnet was primarily associated with sending large volumes of spam, often promoting pharmaceutical products, adult content, and other illicit goods.