Most botnets suck. They are based on crappy software maintained by clueless people - completely boring for the experienced botnet takeover guy. You are looking for challenges? This talk demonstrates how the more sophisticated botnets that make use of e.g., peer-to-peer technology or strong cryptography can be 0wned. We will have a look at the infamous Storm Worm, the Waledac bot, and also our last year's favorite, Conficker. Sit back, relax, enjoy!