Conversations in Cyberspace is a collection of insights on the current state of security and privacy in the Internet world. The book contains a brief introduction to some of the most used open-source intelligence (OSINT) tools and a selection of interviews with some of the key figures in industrial control systems (ICS), advanced persistent threat (APT) and online/deep web members organizations. It aims to be an introduction to the relationships between security, OSINT and the vast and complex world hiding in the deep web. The information provided will be beneficial to security professionals and system administrators interested in exploring today's concerns in database design, privacy and security-by-design, and deep web members organizations, including Cicada 3301, the Unknowns, Anonymous, and more.