Explore the intricate details of the GameOver Zeus botnet and Cryptolocker ransomware in this 50-minute Black Hat conference talk. Delve into the complex law enforcement operation that brought down one of the most sophisticated cybercrime networks. Learn about the individuals behind these malicious campaigns, the extensive international collaboration between government agencies and private industry, and the innovative legal strategies employed to dismantle the botnet. Gain insights into the fraud cycle, the group's internal systems, and the technical aspects of the botnet's peer-to-peer network and centralized infrastructure. Discover the methods used to track and identify the cybercriminals, including the record-breaking $3 million reward offered for Evgeniy Bogachev. Examine the evidence gathered, the business operations of the criminal enterprise, and the significance of this landmark case in the fight against cybercrime.