Smartwatches, increasingly prevalent in everyday life, are true digital hubs that collect sensi-tive data: health information, credentials, geolocation, and even interactions with other IoT devices. But how truly secure are they? This book explores in depth the vulnerabilities and threats targeting wearable devices, analyzing real-world attack cases, advanced hacking techniques, and the necessary countermeasures to ensure personal data protection. Through a multidisciplinary approach combining advanced cryptography, post-quantum protocols, lightweight blockchain, and decentralized networks, the text guides readers through the most innovative solutions for making smartwatches and the entire IoT ecosystem resilient against current and future threats. With practical examples and simulation scenarios, this volume is designed for cybersecurity professionals, developers, researchers, and companies operating in the Internet of Things domain. A journey into the heart of wearable security, to understand and master the challenges of data protection in the new digital era.
