Evidence has surfaced that several large botnets are now fighting each other. trying to disable or even take over their "competitors".

The Bredo and Zeus botnets. both responsible for millions of phishing scam emails per day, are currently fighting each other. Bredo now uses Zeus' known autorun Instructions to prevent its main executables from starting up, before replacing them with Its own. Thus, botnets are actively invading each other and claiming the territory they conquer. Similarly. a Trojan known as FRuWL hides its entire binary structure in the Windows registry rather than an autorun path. so it can supersede other infections.