Mastering Electronic Surveillance is a definitive guide covering the evolution, technology, legal frameworks, ethics, and operational excellence in physical security surveillance systems, with a special focus on East Africa. The book opens by tracing the journey from analog CCTV to AI-powered edge analytics, explaining the transition from traditional monitoring to predictive surveillance. It categorizes modern surveillance tools, including cameras, mobile devices, perimeter protection, biometrics, and their integrations with access control. The narrative then explores emerging trends like deep learning, drones, and the challenges posed by deepfakes. The book delves into standards, technical specifications, and real-world installation challenges, emphasizing site surveys, environmental factors, and connectivity solutions. A pivotal section addresses the human element—training control room operators, combating fatigue, and supervising teams—as well as AI analytics applications and the necessity of human verification. The book stresses process discipline through SOPs, system maintenance, and ensuring data integrity for legal admissibility. It tackles data privacy concerns, outlining core principles and legal compliance, including consent dilemmas and key case law from global courts. A specialized focus on East Africa examines regulatory landscapes in Kenya, Uganda, and Tanzania, cultural attitudes, infrastructure hurdles, and ethical considerations related to AI bias and civil liberties. Finally, it presents practical toolkits such as policies, operational manuals, codes of conduct, and audit frameworks. The book concludes by emphasizing the need for security leaders to be adept technologists, legal experts, and ethical stewards, fostering environments that respect individual rights while enhancing security in an age of pervasive surveillance technology.