In an era where we have traded privacy for convenience and sovereignty for efficiency, Prof. Attlee M. Gamundani presents a critical field guide for reclaiming our digital lives. The Human Firewall explores the "Glass House" of the Internet of Things, the "Digital Playgrounds" where our children navigate unsupervised, and the "Invisible Siege" on our critical infrastructure. Drawing from fifteen years of research—from solar-powered labs in rural Zimbabwe to the policy halls of the United Nations—this book moves beyond technical manuals to offer a blueprint for "Algorithmic Sovereignty" and "Green Computing". It is an essential read for parents, policymakers, and citizens who believe technology should serve humanity without enslaving it.