This report provides a comprehensive overview of botnet security, exploring various aspects such as botnet architecture, operation, and the different variants employed by attackers, including botmasters and zombies. It delves into the potential threats posed by botnets, specifically focusing on DDoS attacks, spamming, and phishing, while also examining the network applications targeted by these malicious activities, particularly email programs. Furthermore, the report outlines various mitigation techniques to combat botnet threats, such as installing Windows firewalls and regularly updating software. The report also includes a literature review of existing IT frameworks like ISO, NIST, COBIT, ETSI, and RFC, highlighting their roles in enhancing network security. It emphasizes the importance of proactive security measures and awareness to safeguard against cyber threats.