Discussion in this podcast explores the concept of Open Source Intelligence (OSINT), defining it as the systematic collection and analysis of publicly available information. It highlights OSINT's dual-use nature, demonstrating how the same techniques employed for legitimate purposes like investigating war crimes can be weaponised against individuals through doxxing, social engineering, and identity theft. It details the mechanics of OSINT, differentiating between passive and active methods, and identifies numerous sources of personal exposure, including social media, public records, and IoT devices. Finally, it offers a practical guide to digital self-defence, emphasising mindful sharing, privacy settings management, and the implementation of technical safeguards such as multi-factor authentication and password managers, while also touching upon the legal and ethical boundaries surrounding OSINT.